diff --git a/PLAN.md b/PLAN.md
index ad61be0..71bf14b 100644
--- a/PLAN.md
+++ b/PLAN.md
@@ -1737,6 +1737,12 @@ updates its display-facing values without a manual restart once sync lands.
     live portal UI itself, not just the backing APIs/helpers
   - If copy/paste provisioning feels too clunky in practice, add a later QR /
     claim-code pairing flow
+  - Main portal overview/history/dashcam pages are **not** multi-device yet:
+    the data model already separates rows by `device_id`, but those pages still
+    read from the single configured `DEVICE_NAME`. Today that means the new
+    multi-device management page can manage several devices, but the normal trip
+    history view still shows one configured car/device at a time until a later
+    portal-wide device selector/filter is implemented.
 
   ---
 
diff --git a/server/app.py b/server/app.py
index 3336df2..b051bfe 100644
--- a/server/app.py
+++ b/server/app.py
@@ -699,6 +699,19 @@ def portal_device_request_sync(device_id):
     return jsonify(result)
 
 
+@app.delete("/api/v1/portal/devices/<int:device_id>")
+@require_login
+def portal_device_delete(device_id):
+    success, errors = device_registry.delete_device(
+        device_id,
+        protected_device_name=os.environ.get("DEVICE_NAME", "yaris-2013"),
+    )
+    if not success:
+        status = 404 if errors.get("error") == "Device not found." else 409
+        return jsonify(error=errors.get("error", "Could not delete device.")), status
+    return jsonify(status="deleted")
+
+
 @app.get("/api/v1/portal/device-config")
 @require_login
 def portal_device_config_get():
diff --git a/server/modules/db.py b/server/modules/db.py
index ffbb234..c82e949 100644
--- a/server/modules/db.py
+++ b/server/modules/db.py
@@ -187,6 +187,13 @@ def acknowledge_device_sync(device_id, config_version):
         )
 
 
+def delete_device(device_id):
+    with get_cursor(commit=True) as cur:
+        cur.execute("DELETE FROM devices WHERE id = %s RETURNING id", (device_id,))
+        row = cur.fetchone()
+    return row[0] if row else None
+
+
 def insert_tracking_points(device_id, points):
     """Bulk-insert tracking points, skipping any that already exist
     (device_id, recorded_at) so a client can safely re-send a batch after a
diff --git a/server/modules/device_registry.py b/server/modules/device_registry.py
index 06b4423..2f280ee 100644
--- a/server/modules/device_registry.py
+++ b/server/modules/device_registry.py
@@ -63,6 +63,21 @@ def request_sync(device_id):
     }
 
 
+def delete_device(device_id, protected_device_name=None):
+    device = db.get_device_by_id(device_id)
+    if device is None:
+        return False, {"error": "Device not found."}
+    if protected_device_name and device["name"] == protected_device_name:
+        return False, {
+            "error": "Cannot delete the portal's default device while DEVICE_NAME still points to it.",
+        }
+
+    deleted_id = db.delete_device(device_id)
+    if deleted_id is None:
+        return False, {"error": "Device not found."}
+    return True, {}
+
+
 def acknowledge_sync(device_id, config_version):
     db.acknowledge_device_sync(device_id, config_version)
 
diff --git a/server/templates/device_settings.html b/server/templates/device_settings.html
index 194611c..40f139e 100644
--- a/server/templates/device_settings.html
+++ b/server/templates/device_settings.html
@@ -57,6 +57,9 @@
                     <button class="btn btn-outline-primary btn-sm" id="request-sync-button" type="button" disabled>
                         <i class="fas fa-rotate me-1"></i>Request sync
                     </button>
+                    <button class="btn btn-outline-danger btn-sm" id="delete-device-button" type="button" disabled>
+                        <i class="fas fa-trash-alt me-1"></i>Delete device
+                    </button>
                 </div>
             </div>
             <div class="card-body">
@@ -144,6 +147,7 @@
                     <li><strong>Request sync</strong> means “fetch this config on the Pi's next online contact”.</li>
                     <li>The car can still be offline; the remote server cannot push directly into it.</li>
                     <li>Use the Pi's local <strong>Sync now</strong> button for immediate pull attempts.</li>
+                    <li><strong>Delete device</strong> removes that device row and cascades its trips, tracking logs, and dashcam files from the server.</li>
                 </ul>
             </div>
         </div>
diff --git a/static/js/portal-device-settings.js b/static/js/portal-device-settings.js
index bd11ada..7ba722b 100644
--- a/static/js/portal-device-settings.js
+++ b/static/js/portal-device-settings.js
@@ -7,6 +7,7 @@ const createDeviceButton = document.getElementById('create-device-button');
 const newDeviceName = document.getElementById('new-device-name');
 const rotateKeyButton = document.getElementById('rotate-key-button');
 const requestSyncButton = document.getElementById('request-sync-button');
+const deleteDeviceButton = document.getElementById('delete-device-button');
 const copyCredentialsButton = document.getElementById('copy-credentials-button');
 
 const selectedSummary = {
@@ -64,6 +65,7 @@ function setFormEnabled(enabled) {
     }
     rotateKeyButton.disabled = !enabled;
     requestSyncButton.disabled = !enabled;
+    deleteDeviceButton.disabled = !enabled;
     updateDirtyState();
 }
 
@@ -239,6 +241,36 @@ async function requestSync() {
     }
 }
 
+async function deleteDevice() {
+    if (selectedDeviceId === null) return;
+    const device = devices.find(candidate => candidate.id === selectedDeviceId);
+    if (!device) return;
+    if (!window.confirm(`Delete device "${device.name}" and all of its server-side trips, tracking logs, and dashcam files?`)) {
+        return;
+    }
+    hideMessage();
+    deleteDeviceButton.disabled = true;
+    try {
+        const response = await fetch(`/api/v1/portal/devices/${selectedDeviceId}`, {
+            method: 'DELETE',
+        });
+        const payload = await response.json();
+        if (!response.ok) {
+            throw new Error(payload.error || 'Could not delete device.');
+        }
+        latestApiKey = '';
+        credentialFields.apiKey.value = '';
+        copyCredentialsButton.disabled = true;
+        selectedDeviceId = null;
+        await loadDevices();
+        showMessage('Device deleted from the server.', 'success');
+    } catch (error) {
+        showMessage(error.message, 'danger');
+    } finally {
+        deleteDeviceButton.disabled = selectedDeviceId === null;
+    }
+}
+
 async function saveConfig(event) {
     event.preventDefault();
     if (selectedDeviceId === null) return;
@@ -284,6 +316,7 @@ form.addEventListener('submit', saveConfig);
 createDeviceButton.addEventListener('click', createDevice);
 rotateKeyButton.addEventListener('click', rotateKey);
 requestSyncButton.addEventListener('click', requestSync);
+deleteDeviceButton.addEventListener('click', deleteDevice);
 copyCredentialsButton.addEventListener('click', () => {
     copyCredentials().catch(error => showMessage(`Could not copy credentials: ${error.message}`, 'danger'));
 });