diff --git a/WebAPI_Changelog.md b/WebAPI_Changelog.md
index 0ed5ba7a4..3b88c8d13 100644
--- a/WebAPI_Changelog.md
+++ b/WebAPI_Changelog.md
@@ -3,6 +3,8 @@
 ## 2.14.1
 * [#23212](https://github.com/qbittorrent/qBittorrent/pull/23212)
   * Add `app/rotateAPIKey` endpoint for generating, and rotating, the WebAPI API key
+* [#23388](https://github.com/qbittorrent/qBittorrent/pull/23388)
+  * Add `app/deleteAPIKey` endpoint for deleting the existing WebAPI API key
 
 ## 2.14.0
 * [#23202](https://github.com/qbittorrent/qBittorrent/pull/23202)
diff --git a/src/gui/optionsdialog.cpp b/src/gui/optionsdialog.cpp
index 5ea18fe06..b050e8221 100644
--- a/src/gui/optionsdialog.cpp
+++ b/src/gui/optionsdialog.cpp
@@ -1356,21 +1356,10 @@ void OptionsDialog::loadWebUITabOptions()
 
     // API Key
     if (const QString apiKey = pref->getWebUIApiKey(); Utils::APIKey::isValid(apiKey))
-    {
         m_currentAPIKey = apiKey;
-        m_ui->textWebUIAPIKey->setText(maskAPIKey(m_currentAPIKey));
-        m_ui->textWebUIAPIKey->setEnabled(true);
-        m_ui->btnWebUIAPIKeyCopy->setEnabled(true);
-        m_ui->btnWebUIAPIKeyRotate->setToolTip(tr("Rotate API key"));
-    }
     else
-    {
         m_currentAPIKey.clear();
-        m_ui->textWebUIAPIKey->clear();
-        m_ui->textWebUIAPIKey->setEnabled(false);
-        m_ui->btnWebUIAPIKeyCopy->setEnabled(false);
-        m_ui->btnWebUIAPIKeyRotate->setToolTip(tr("Generate API key"));
-    }
+    setupWebUIAPIKey();
 
     m_ui->checkBypassLocalAuth->setChecked(!pref->isWebUILocalAuthEnabled());
     m_ui->checkBypassAuthSubnetWhitelist->setChecked(pref->isWebUIAuthSubnetWhitelistEnabled());
@@ -1412,8 +1401,9 @@ void OptionsDialog::loadWebUITabOptions()
 
     connect(m_ui->textWebUIUsername, &QLineEdit::textChanged, this, &ThisType::enableApplyButton);
     connect(m_ui->textWebUIPassword, &QLineEdit::textChanged, this, &ThisType::enableApplyButton);
-    connect(m_ui->btnWebUIAPIKeyCopy, &QPushButton::clicked, this, &ThisType::onBtnWebUIAPIKeyCopy);
-    connect(m_ui->btnWebUIAPIKeyRotate, &QPushButton::clicked, this, &ThisType::onBtnWebUIAPIKeyRotate);
+    connect(m_ui->btnWebUIAPIKeyCopy, &QPushButton::clicked, this, &ThisType::onBtnWebUIAPIKeyCopyClicked);
+    connect(m_ui->btnWebUIAPIKeyRotate, &QPushButton::clicked, this, &ThisType::onBtnWebUIAPIKeyRotateClicked);
+    connect(m_ui->btnWebUIAPIKeyDelete, &QPushButton::clicked, this, &ThisType::onBtnWebUIAPIKeyDeleteClicked);
 
     connect(m_ui->checkBypassLocalAuth, &QAbstractButton::toggled, this, &ThisType::enableApplyButton);
     connect(m_ui->checkBypassAuthSubnetWhitelist, &QAbstractButton::toggled, this, &ThisType::enableApplyButton);
@@ -1490,13 +1480,13 @@ void OptionsDialog::saveWebUITabOptions() const
     pref->setDynDNSPassword(m_ui->DNSPasswordTxt->text());
 }
 
-void OptionsDialog::onBtnWebUIAPIKeyCopy()
+void OptionsDialog::onBtnWebUIAPIKeyCopyClicked()
 {
     if (!m_currentAPIKey.isEmpty())
         QApplication::clipboard()->setText(m_currentAPIKey);
 }
 
-void OptionsDialog::onBtnWebUIAPIKeyRotate()
+void OptionsDialog::onBtnWebUIAPIKeyRotateClicked()
 {
     const QString title = m_currentAPIKey.isEmpty()
         ? tr("Generate API key")
@@ -1511,16 +1501,51 @@ void OptionsDialog::onBtnWebUIAPIKeyRotate()
     if (button == QMessageBox::Yes)
     {
         m_currentAPIKey = Utils::APIKey::generate();
-        m_ui->textWebUIAPIKey->setText(maskAPIKey(m_currentAPIKey));
-        m_ui->textWebUIAPIKey->setEnabled(true);
-        m_ui->btnWebUIAPIKeyCopy->setEnabled(true);
-        m_ui->btnWebUIAPIKeyRotate->setToolTip(tr("Rotate API key"));
+        setupWebUIAPIKey();
 
         auto *preferences = Preferences::instance();
         preferences->setWebUIApiKey(m_currentAPIKey);
         preferences->apply();
     }
 }
+
+void OptionsDialog::onBtnWebUIAPIKeyDeleteClicked()
+{
+    const QString title = tr("Delete API key");
+    const QString message = tr("Delete this API key? The current key will immediately stop working.");
+    const QMessageBox::StandardButton button = QMessageBox::question(
+        this, title, message, (QMessageBox::Yes | QMessageBox::No), QMessageBox::No);
+
+    if (button == QMessageBox::Yes)
+    {
+        m_currentAPIKey.clear();
+        setupWebUIAPIKey();
+
+        auto *preferences = Preferences::instance();
+        preferences->setWebUIApiKey(m_currentAPIKey);
+        preferences->apply();
+    }
+}
+
+void OptionsDialog::setupWebUIAPIKey()
+{
+    if (Utils::APIKey::isValid(m_currentAPIKey))
+    {
+        m_ui->textWebUIAPIKey->setText(maskAPIKey(m_currentAPIKey));
+        m_ui->textWebUIAPIKey->setEnabled(true);
+        m_ui->btnWebUIAPIKeyCopy->setEnabled(true);
+        m_ui->btnWebUIAPIKeyRotate->setToolTip(tr("Rotate API key"));
+        m_ui->btnWebUIAPIKeyDelete->setEnabled(true);
+    }
+    else
+    {
+        m_ui->textWebUIAPIKey->clear();
+        m_ui->textWebUIAPIKey->setEnabled(false);
+        m_ui->btnWebUIAPIKeyCopy->setEnabled(false);
+        m_ui->btnWebUIAPIKeyRotate->setToolTip(tr("Generate API key"));
+        m_ui->btnWebUIAPIKeyDelete->setEnabled(false);
+    }
+}
 #endif // DISABLE_WEBUI
 
 void OptionsDialog::initializeLanguageCombo()
diff --git a/src/gui/optionsdialog.h b/src/gui/optionsdialog.h
index c63d8e6c7..2a6266198 100644
--- a/src/gui/optionsdialog.h
+++ b/src/gui/optionsdialog.h
@@ -110,8 +110,10 @@ private slots:
     void webUIHttpsCertChanged(const Path &path);
     void webUIHttpsKeyChanged(const Path &path);
     void on_registerDNSBtn_clicked();
-    void onBtnWebUIAPIKeyCopy();
-    void onBtnWebUIAPIKeyRotate();
+    void onBtnWebUIAPIKeyCopyClicked();
+    void onBtnWebUIAPIKeyRotateClicked();
+    void onBtnWebUIAPIKeyDeleteClicked();
+    void setupWebUIAPIKey();
 #endif
 
 private:
diff --git a/src/gui/optionsdialog.ui b/src/gui/optionsdialog.ui
index 6a138971b..0e04f372d 100644
--- a/src/gui/optionsdialog.ui
+++ b/src/gui/optionsdialog.ui
@@ -3861,6 +3861,35 @@ Specify an IPv4 or IPv6 address. You can specify "0.0.0.0" for any IPv
                          </property>
                         </widget>
                        </item>
+                       <item>
+                        <widget class="QPushButton" name="btnWebUIAPIKeyDelete">
+                         <property name="sizePolicy">
+                          <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+                           <horstretch>0</horstretch>
+                           <verstretch>0</verstretch>
+                          </sizepolicy>
+                         </property>
+                         <property name="maximumSize">
+                          <size>
+                           <width>32</width>
+                           <height>32</height>
+                          </size>
+                         </property>
+                         <property name="toolTip">
+                          <string>Delete API key</string>
+                         </property>
+                         <property name="text">
+                          <string/>
+                         </property>
+                         <property name="icon">
+                          <iconset resource="../icons.qrc">
+                           <normaloff>:/icons/list-remove.svg</normaloff>:/icons/list-remove.svg</iconset>
+                         </property>
+                         <property name="flat">
+                          <bool>false</bool>
+                         </property>
+                        </widget>
+                       </item>
                       </layout>
                      </item>
                     </layout>
diff --git a/src/webui/api/appcontroller.cpp b/src/webui/api/appcontroller.cpp
index 014c9bfde..3da495fdc 100644
--- a/src/webui/api/appcontroller.cpp
+++ b/src/webui/api/appcontroller.cpp
@@ -1326,6 +1326,13 @@ void AppController::rotateAPIKeyAction()
     setResult(QJsonObject {{u"apiKey"_s, key}});
 }
 
+void AppController::deleteAPIKeyAction()
+{
+    auto *preferences = Preferences::instance();
+    preferences->setWebUIApiKey({});
+    preferences->apply();
+}
+
 void AppController::networkInterfaceListAction()
 {
     QJsonArray ifaceList;
diff --git a/src/webui/api/appcontroller.h b/src/webui/api/appcontroller.h
index 8426a474f..ecc5c99ed 100644
--- a/src/webui/api/appcontroller.h
+++ b/src/webui/api/appcontroller.h
@@ -53,6 +53,7 @@ private slots:
     void cookiesAction();
     void setCookiesAction();
     void rotateAPIKeyAction();
+    void deleteAPIKeyAction();
 
     void networkInterfaceListAction();
     void networkInterfaceAddressListAction();
diff --git a/src/webui/webapplication.h b/src/webui/webapplication.h
index 16554342a..032491a18 100644
--- a/src/webui/webapplication.h
+++ b/src/webui/webapplication.h
@@ -53,7 +53,7 @@
 #include "base/utils/version.h"
 #include "api/isessionmanager.h"
 
-inline const Utils::Version<3, 2> API_VERSION {2, 14, 0};
+inline const Utils::Version<3, 2> API_VERSION {2, 14, 1};
 
 class APIController;
 class AuthController;
@@ -150,6 +150,7 @@ private:
     const QHash<std::pair<QString, QString>, QString> m_allowedMethod =
     {
         // <<controller name, action name>, HTTP method>
+        {{u"app"_s, u"deleteAPIKey"_s}, Http::METHOD_POST},
         {{u"app"_s, u"rotateAPIKey"_s}, Http::METHOD_POST},
         {{u"app"_s, u"sendTestEmail"_s}, Http::METHOD_POST},
         {{u"app"_s, u"setCookies"_s}, Http::METHOD_POST},
diff --git a/src/webui/www/private/views/confirmRotateAPIKey.html b/src/webui/www/private/views/confirmAPIKey.html
similarity index 65%
rename from src/webui/www/private/views/confirmRotateAPIKey.html
rename to src/webui/www/private/views/confirmAPIKey.html
index 44df72593..73bde96e6 100644
--- a/src/webui/www/private/views/confirmRotateAPIKey.html
+++ b/src/webui/www/private/views/confirmAPIKey.html
@@ -1,24 +1,24 @@
-<div id="confirmRotateAPIKeyDialog">
+<div id="confirmAPIKeyDialog">
     <div class="genericConfirmGrid">
         <span class="confirmGridItem confirmWarning"></span>
         <span class="confirmGridItem dialogMessage"></span>
     </div>
 </div>
 <div>
-    <input type="button" value="QBT_TR(Yes)QBT_TR[CONTEXT=MainWindow]" id="confirmRotateButton">
-    <input type="button" value="QBT_TR(No)QBT_TR[CONTEXT=MainWindow]" id="cancelRotateButton">
+    <input type="button" value="QBT_TR(Yes)QBT_TR[CONTEXT=MainWindow]" id="confirmAPIKeyButton">
+    <input type="button" value="QBT_TR(No)QBT_TR[CONTEXT=MainWindow]" id="cancelAPIKeyButton">
 </div>
 
 <script>
     "use strict";
 
     (() => {
-        const { windowEl, options } = window.MUI.Windows.instances["confirmRotateAPIKeyDialog"];
-        const { message } = options.data;
+        const { windowEl, options } = window.MUI.Windows.instances["confirmAPIKeyDialog"];
+        const { message, action } = options.data;
 
-        const confirmButton = document.getElementById("confirmRotateButton");
-        const cancelButton = document.getElementById("cancelRotateButton");
-        const dialog = document.getElementById("confirmRotateAPIKeyDialog");
+        const confirmButton = document.getElementById("confirmAPIKeyButton");
+        const cancelButton = document.getElementById("cancelAPIKeyButton");
+        const dialog = document.getElementById("confirmAPIKeyDialog");
 
         dialog.querySelector("span.dialogMessage").textContent = message;
 
@@ -26,7 +26,14 @@
             window.qBittorrent.Client.closeWindow(dialog);
         });
         confirmButton.addEventListener("click", (e) => {
-            window.qBittorrent.Preferences.rotateAPIKey();
+            switch (action) {
+                case "rotate":
+                    window.qBittorrent.Preferences.rotateAPIKey();
+                    break;
+                case "delete":
+                    window.qBittorrent.Preferences.deleteAPIKey();
+                    break;
+            }
             window.qBittorrent.Client.closeWindow(dialog);
         });
 
diff --git a/src/webui/www/private/views/preferences.html b/src/webui/www/private/views/preferences.html
index 67ccfc239..76257e9bb 100644
--- a/src/webui/www/private/views/preferences.html
+++ b/src/webui/www/private/views/preferences.html
@@ -1012,6 +1012,11 @@
                                     <img src="images/force-recheck.svg" alt="QBT_TR(Generate API key)QBT_TR[CONTEXT=OptionsDialog]" title="QBT_TR(Generate API key)QBT_TR[CONTEXT=OptionsDialog]" width="16" height="16" style="margin: 4px; top: 2px; position: relative;">
                                 </button>
                             </td>
+                            <td>
+                                <button type="button" disabled id="webUIAPIKeyDeleteButton" style="padding: 0;" data-has-key="false" aria-label="QBT_TR(Delete API key)QBT_TR[CONTEXT=OptionsDialog]">
+                                    <img src="images/list-remove.svg" alt="QBT_TR(Delete API key)QBT_TR[CONTEXT=OptionsDialog]" title="QBT_TR(Delete API key)QBT_TR[CONTEXT=OptionsDialog]" width="16" height="16" style="margin: 4px; top: 2px; position: relative;">
+                                </button>
+                            </td>
                         </tr>
                     </tbody>
                 </table>
@@ -1823,6 +1828,7 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
                 updateWebuiLocaleSelect: updateWebuiLocaleSelect,
                 registerDynDns: registerDynDns,
                 rotateAPIKey: rotateAPIKey,
+                deleteAPIKey: deleteAPIKey,
                 applyPreferences: applyPreferences
             };
         };
@@ -2586,6 +2592,7 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
                         document.getElementById("webUIAPIKeyCopyButton").disabled = false;
                         document.getElementById("webUIAPIKeyRotateButton").dataset.hasKey = "true";
                         document.querySelector("#webUIAPIKeyRotateButton img").title = "QBT_TR(Rotate API key)QBT_TR[CONTEXT=OptionsDialog]";
+                        document.getElementById("webUIAPIKeyDeleteButton").disabled = false;
                     }
 
                     // Use alternative WebUI
@@ -3287,12 +3294,37 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
                     document.getElementById("webUIAPIKeyCopyButton").disabled = false;
                     document.getElementById("webUIAPIKeyRotateButton").dataset.hasKey = "true";
                     document.querySelector("#webUIAPIKeyRotateButton img").title = "QBT_TR(Rotate API key)QBT_TR[CONTEXT=OptionsDialog]";
+                    document.getElementById("webUIAPIKeyDeleteButton").disabled = false;
                 })
                 .catch((error) => {
                     alert(`QBT_TR(Unable to rotate API key.)QBT_TR[CONTEXT=HttpServer] ${error.toString()}`);
                 });
         };
 
+        const deleteAPIKey = () => {
+            fetch("api/v2/app/deleteAPIKey", {
+                    method: "POST",
+                })
+                .then(async (response) => {
+                    if (!response.ok) {
+                        alert(await response.text());
+                        return;
+                    }
+
+                    const apiKeyTextElem = document.getElementById("WebUIAPIKeyText");
+                    apiKeyTextElem.value = "";
+                    apiKeyTextElem.dataset.apiKey = "";
+
+                    document.getElementById("webUIAPIKeyCopyButton").disabled = true;
+                    document.getElementById("webUIAPIKeyRotateButton").dataset.hasKey = "false";
+                    document.querySelector("#webUIAPIKeyRotateButton img").title = "QBT_TR(Generate API key)QBT_TR[CONTEXT=OptionsDialog]";
+                    document.getElementById("webUIAPIKeyDeleteButton").disabled = true;
+                })
+                .catch((error) => {
+                    alert(`QBT_TR(Unable to delete API key.)QBT_TR[CONTEXT=HttpServer] ${error.toString()}`);
+                });
+        };
+
         document.getElementById("webUIAPIKeyCopyButton").addEventListener("click", async (e) => {
             const apiKey = document.getElementById("WebUIAPIKeyText").dataset.apiKey;
             await clipboardCopy(apiKey);
@@ -3310,7 +3342,7 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
         });
 
         document.getElementById("webUIAPIKeyRotateButton").addEventListener("click", (e) => {
-            const hasKey = e.target.parentElement.dataset.hasKey;
+            const hasKey = e.target.parentElement.dataset.hasKey === "true";
             const title = hasKey
                 ? "QBT_TR(Rotate API key)QBT_TR[CONTEXT=OptionsDialog]"
                 : "QBT_TR(Generate API key)QBT_TR[CONTEXT=OptionsDialog]";
@@ -3320,11 +3352,26 @@ Use ';' to split multiple entries. Can use wildcard '*'.)QBT_TR[CONTEXT=OptionsD
 
             new MochaUI.Modal({
                 ...window.qBittorrent.Dialog.baseModalOptions,
-                id: "confirmRotateAPIKeyDialog",
                 title: title,
-                contentURL: "views/confirmRotateAPIKey.html?v=${CACHEID}",
+                id: "confirmAPIKeyDialog",
+                contentURL: "views/confirmAPIKey.html?v=${CACHEID}",
                 data: {
-                    hasKey: hasKey,
+                    action: "rotate",
+                    message: message,
+                },
+            });
+        });
+
+        document.getElementById("webUIAPIKeyDeleteButton").addEventListener("click", (e) => {
+            const title = "QBT_TR(Delete API key)QBT_TR[CONTEXT=OptionsDialog]";
+            const message = "QBT_TR(Delete this API key? The current key will immediately stop working.)QBT_TR[CONTEXT=confirmRotateAPIKeyDialog]";
+            new MochaUI.Modal({
+                ...window.qBittorrent.Dialog.baseModalOptions,
+                title: title,
+                id: "confirmAPIKeyDialog",
+                contentURL: "views/confirmAPIKey.html?v=${CACHEID}",
+                data: {
+                    action: "delete",
                     message: message,
                 },
             });
diff --git a/src/webui/www/webui.qrc b/src/webui/www/webui.qrc
index 95e832924..beaf2cf2d 100644
--- a/src/webui/www/webui.qrc
+++ b/src/webui/www/webui.qrc
@@ -424,7 +424,7 @@
         <file>private/views/confirmAutoTMM.html</file>
         <file>private/views/confirmdeletion.html</file>
         <file>private/views/confirmRecheck.html</file>
-        <file>private/views/confirmRotateAPIKey.html</file>
+        <file>private/views/confirmAPIKey.html</file>
         <file>private/views/cookies.html</file>
         <file>private/views/createtorrent.html</file>
         <file>private/views/filters.html</file>