diff --git a/database/migrations/scope_lms_courses_unique_indexes_to_tenant.php.stub b/database/migrations/scope_lms_courses_unique_indexes_to_tenant.php.stub
new file mode 100644
index 0000000..64f2bc6
--- /dev/null
+++ b/database/migrations/scope_lms_courses_unique_indexes_to_tenant.php.stub
@@ -0,0 +1,70 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Tapp\FilamentLms\Helpers\TenantHelper;
+
+return new class extends Migration
+{
+    /**
+     * @var list<string>
+     */
+    private array $columns = ['name', 'slug', 'external_id'];
+
+    public function up(): void
+    {
+        if (! $this->shouldScopeUniqueIndexes()) {
+            return;
+        }
+
+        $tenantColumn = TenantHelper::getTenantColumnName();
+        $drop = [];
+        $add = [];
+
+        foreach ($this->columns as $column) {
+            if (Schema::hasIndex('lms_courses', [$column], 'unique')) {
+                $drop[] = $column;
+            }
+
+            if (! Schema::hasIndex('lms_courses', [$tenantColumn, $column], 'unique')) {
+                $add[] = $column;
+            }
+        }
+
+        if ($drop !== []) {
+            Schema::table('lms_courses', function (Blueprint $table) use ($drop): void {
+                foreach ($drop as $column) {
+                    $table->dropUnique([$column]);
+                }
+            });
+        }
+
+        if ($add !== []) {
+            Schema::table('lms_courses', function (Blueprint $table) use ($add, $tenantColumn): void {
+                foreach ($add as $column) {
+                    $table->unique([$tenantColumn, $column]);
+                }
+            });
+        }
+    }
+
+    public function down(): void
+    {
+        // Do not restore global unique indexes. After this migration runs,
+        // two tenants may share a name, slug, or external_id; rolling back
+        // would drop tenant-scoped constraints and can fail to recreate globals.
+    }
+
+    private function shouldScopeUniqueIndexes(): bool
+    {
+        if (! config('filament-lms.tenancy.enabled')) {
+            return false;
+        }
+
+        $tenantColumn = TenantHelper::getTenantColumnName();
+
+        return Schema::hasTable('lms_courses')
+            && Schema::hasColumn('lms_courses', $tenantColumn);
+    }
+};
diff --git a/src/FilamentLmsServiceProvider.php b/src/FilamentLmsServiceProvider.php
index 52f235a..017874e 100644
--- a/src/FilamentLmsServiceProvider.php
+++ b/src/FilamentLmsServiceProvider.php
@@ -72,6 +72,7 @@ public function configurePackage(Package $package): void
                 'create_lms_course_user_group_table',
                 'create_lms_user_group_memberships_table',
                 'add_is_explicitly_assigned_to_lms_course_user_table',
+                'scope_lms_courses_unique_indexes_to_tenant',
             ])
             ->hasCommand(BackfillCourseCompletedAt::class)
             ->hasCommand(BackfillEmbeddedPlayerCourses::class)
diff --git a/src/Resources/CourseResource.php b/src/Resources/CourseResource.php
index 5861d54..2bd9c5e 100644
--- a/src/Resources/CourseResource.php
+++ b/src/Resources/CourseResource.php
@@ -83,13 +83,13 @@ public static function form(Schema $schema): Schema
                             $set('external_id', Str::slug($state ?? '', '_'));
                         }
                     })
-                    ->unique(ignoreRecord: true)
+                    ->scopedUnique(ignoreRecord: true)
                     ->required(),
                 TextInput::make('external_id')
                     ->label('External ID')
                     ->helperText('Used for external integrations like HubSpot. Updating this will cause a new property to be added to the integration.')
                     ->required()
-                    ->unique(ignoreRecord: true)
+                    ->scopedUnique(ignoreRecord: true)
                     ->rules([
                         'regex:/^[a-z][a-z0-9_]*$/',
                         'max:100',
@@ -100,7 +100,7 @@ public static function form(Schema $schema): Schema
                     ]),
                 TextInput::make('slug')
                     ->helperText('Used for urls.')
-                    ->unique(ignoreRecord: true)
+                    ->scopedUnique(ignoreRecord: true)
                     ->required(),
                 SpatieMediaLibraryFileUpload::make('image')
                     ->helperText('Upload a course image.')
diff --git a/tests/Feature/ScopeLmsCoursesUniqueIndexesToTenantTest.php b/tests/Feature/ScopeLmsCoursesUniqueIndexesToTenantTest.php
new file mode 100644
index 0000000..78405f4
--- /dev/null
+++ b/tests/Feature/ScopeLmsCoursesUniqueIndexesToTenantTest.php
@@ -0,0 +1,102 @@
+<?php
+
+namespace Tapp\FilamentLms\Tests\Feature;
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+test('scopes course unique indexes to the tenant column', function () {
+    Schema::create('companies', function (Blueprint $table) {
+        $table->id();
+        $table->timestamps();
+    });
+
+    Schema::table('lms_courses', function (Blueprint $table) {
+        $table->foreignId('company_id')->nullable()->constrained('companies');
+    });
+
+    config([
+        'filament-lms.tenancy.enabled' => true,
+        'filament-lms.tenancy.column' => 'company_id',
+    ]);
+
+    $migration = require dirname(__DIR__, 2).'/database/migrations/scope_lms_courses_unique_indexes_to_tenant.php.stub';
+
+    $migration->up();
+    $migration->up();
+
+    expect(Schema::hasIndex('lms_courses', ['name'], 'unique'))->toBeFalse()
+        ->and(Schema::hasIndex('lms_courses', ['slug'], 'unique'))->toBeFalse()
+        ->and(Schema::hasIndex('lms_courses', ['external_id'], 'unique'))->toBeFalse()
+        ->and(Schema::hasIndex('lms_courses', ['company_id', 'name'], 'unique'))->toBeTrue()
+        ->and(Schema::hasIndex('lms_courses', ['company_id', 'slug'], 'unique'))->toBeTrue()
+        ->and(Schema::hasIndex('lms_courses', ['company_id', 'external_id'], 'unique'))->toBeTrue();
+});
+
+test('does not change course unique indexes when tenancy is disabled', function () {
+    $migration = require dirname(__DIR__, 2).'/database/migrations/scope_lms_courses_unique_indexes_to_tenant.php.stub';
+
+    $migration->up();
+
+    expect(Schema::hasIndex('lms_courses', ['name'], 'unique'))->toBeTrue()
+        ->and(Schema::hasIndex('lms_courses', ['slug'], 'unique'))->toBeTrue()
+        ->and(Schema::hasIndex('lms_courses', ['external_id'], 'unique'))->toBeTrue();
+});
+
+test('does not replace tenant unique indexes with global uniques on rollback', function () {
+    Schema::create('companies', function (Blueprint $table) {
+        $table->id();
+        $table->timestamps();
+    });
+
+    Schema::table('lms_courses', function (Blueprint $table) {
+        $table->foreignId('company_id')->nullable()->constrained('companies');
+    });
+
+    config([
+        'filament-lms.tenancy.enabled' => true,
+        'filament-lms.tenancy.column' => 'company_id',
+    ]);
+
+    $migration = require dirname(__DIR__, 2).'/database/migrations/scope_lms_courses_unique_indexes_to_tenant.php.stub';
+
+    $migration->up();
+
+    $alphaId = DB::table('companies')->insertGetId([
+        'created_at' => now(),
+        'updated_at' => now(),
+    ]);
+    $betaId = DB::table('companies')->insertGetId([
+        'created_at' => now(),
+        'updated_at' => now(),
+    ]);
+
+    DB::table('lms_courses')->insert([
+        [
+            'company_id' => $alphaId,
+            'name' => 'Shared Course Name',
+            'slug' => 'shared-course-slug',
+            'external_id' => 'shared-external-id',
+            'created_at' => now(),
+            'updated_at' => now(),
+        ],
+        [
+            'company_id' => $betaId,
+            'name' => 'Shared Course Name',
+            'slug' => 'shared-course-slug',
+            'external_id' => 'shared-external-id',
+            'created_at' => now(),
+            'updated_at' => now(),
+        ],
+    ]);
+
+    $migration->down();
+
+    expect(Schema::hasIndex('lms_courses', ['company_id', 'name'], 'unique'))->toBeTrue()
+        ->and(Schema::hasIndex('lms_courses', ['company_id', 'slug'], 'unique'))->toBeTrue()
+        ->and(Schema::hasIndex('lms_courses', ['company_id', 'external_id'], 'unique'))->toBeTrue()
+        ->and(Schema::hasIndex('lms_courses', ['name'], 'unique'))->toBeFalse()
+        ->and(Schema::hasIndex('lms_courses', ['slug'], 'unique'))->toBeFalse()
+        ->and(Schema::hasIndex('lms_courses', ['external_id'], 'unique'))->toBeFalse();
+});