diff --git a/application/AssetManagement/AssetManagementController.php b/application/AssetManagement/AssetManagementController.php
index 1353aa134..0a0ace068 100644
--- a/application/AssetManagement/AssetManagementController.php
+++ b/application/AssetManagement/AssetManagementController.php
@@ -92,6 +92,7 @@ class AssetManagementController extends TTCrud
                 $row['currentSite'] = $latestJournal->site;
                 $row['borrowDate'] = $latestJournal->borrowDate;
                 $row['expectedReturnDate'] = $latestJournal->expectedReturnDate;
+                $row['externalUser'] = $latestJournal->externalUser;
             } else {
                 // Asset is available
                 $row['journalId'] = null;
@@ -100,6 +101,7 @@ class AssetManagementController extends TTCrud
                 $row['currentSite'] = null;
                 $row['borrowDate'] = null;
                 $row['expectedReturnDate'] = null;
+                $row['externalUser'] = null;
             }
 
             $row['reservations'] = $reservationMap[$asset->id] ?? [];
@@ -156,6 +158,7 @@ class AssetManagementController extends TTCrud
             'assetId' => $post['assetId'],
             'userId' => $post['userId'],
             'site' => $post['site'],
+            'externalUser' => $post['externalUser'] ?? null,
             'borrowReason' => $post['reason'] ?? null,
             'expectedReturnDate' => $post['expectedReturnDate'] ?? null,
             'borrowDate' => time(),
diff --git a/application/AssetManagementJournal/AssetManagementJournalModel.php b/application/AssetManagementJournal/AssetManagementJournalModel.php
index 5fffca7f5..c7739b1a9 100644
--- a/application/AssetManagementJournal/AssetManagementJournalModel.php
+++ b/application/AssetManagementJournal/AssetManagementJournalModel.php
@@ -5,6 +5,7 @@ class AssetManagementJournalModel extends TTCrudBaseModel {
     public int $assetId;
     public int $userId;
     public string $site;
+    public ?string $externalUser;
     public int $borrowDate;
     public ?int $expectedReturnDate;
     public ?int $returnDate;
diff --git a/db/migrations/20250711105000_asset_management_journal_add_external_user.php b/db/migrations/20250711105000_asset_management_journal_add_external_user.php
new file mode 100644
index 000000000..356be4195
--- /dev/null
+++ b/db/migrations/20250711105000_asset_management_journal_add_external_user.php
@@ -0,0 +1,30 @@
+<?php
+declare(strict_types=1);
+
+use Phinx\Migration\AbstractMigration;
+
+final class AssetManagementJournalAddExternalUser extends AbstractMigration
+{
+    public function up(): void
+    {
+        if ($this->getEnvironment() == "thetool") {
+            $table = $this->table('AssetManagementJournal');
+            $table->addColumn('externalUser', 'string', [
+                'limit' => 255,
+                'null' => true,
+                'default' => null,
+                'after' => 'site',
+            ]);
+            $table->update();
+        }
+    }
+
+    public function down(): void
+    {
+        if ($this->getEnvironment() == "thetool") {
+            $table = $this->table('AssetManagementJournal');
+            $table->removeColumn('externalUser');
+            $table->update();
+        }
+    }
+}
diff --git a/public/js/pages/AssetManagement/AssetManagement.js b/public/js/pages/AssetManagement/AssetManagement.js
index f776ff516..31be0529f 100644
--- a/public/js/pages/AssetManagement/AssetManagement.js
+++ b/public/js/pages/AssetManagement/AssetManagement.js
@@ -220,6 +220,7 @@ Vue.component('asset-borrow-return-widget', {
       <div>
         <div v-if="rowData.currentUserId">
           <div><strong>Ausgeliehen von:</strong> {{ rowData.currentUser }}</div>
+          <div v-if="rowData.externalUser" class="text-info"><strong>Extern an:</strong> {{ rowData.externalUser }}</div>
           <div><strong>Baustelle:</strong> {{ rowData.currentSite }}</div>
           <div><strong>Seit:</strong> {{ formatDate(rowData.borrowDate, 'DD.MM.YYYY HH:mm') }}</div>
           <div v-if="rowData.expectedReturnDate">
@@ -274,6 +275,7 @@ Vue.component('asset-borrow-return-widget', {
           <p><strong>Gerät:</strong> {{ rowData.name }}</p>
           <p><strong>Mitarbeiter:</strong> {{ selectedUserName }}</p>
           <tt-input label="Baustelle / Projekt" v-model="borrowSite" sm row required/>
+          <tt-input label="Externer Entleiher (optional)" v-model="externalUser" sm row/>
           <tt-date-picker label="Vorauss. Rückgabedatum" v-model="expectedReturnDate" :date-range="false" sm row/>
           <tt-textarea label="Grund (optional)" v-model="borrowReason" sm row/>
         </tt-modal>
@@ -296,6 +298,7 @@ Vue.component('asset-borrow-return-widget', {
             borrowSite: '',
             borrowReason: '',
             returnReason: '',
+            externalUser: '',
             expectedReturnDate: null,
             reservationWarning: null,
         }
@@ -338,6 +341,7 @@ Vue.component('asset-borrow-return-widget', {
                     userId: this.selectedUserId,
                     site: this.borrowSite,
                     reason: this.borrowReason,
+                    externalUser: this.externalUser,
                     expectedReturnDate: this.expectedReturnDate,
                     force: force
                 };
@@ -589,6 +593,7 @@ Vue.component('asset-management-journal-modal', {
                 <h5 class="mb-1">{{ entry.userName }} @ {{ entry.site }}</h5>
                 <small>{{ formatDate(entry.borrowDate, 'DD.MM.YY HH:mm') }}</small>
               </div>
+              <p v-if="entry.externalUser" class="mb-1"><strong>Extern an:</strong> <span class="text-info">{{ entry.externalUser }}</span></p>
               <p class="mb-1"><strong>Grund:</strong> {{ entry.borrowReason || '-' }}</p>
               <div v-if="entry.returnDate">
                 <small class="text-success">