diff --git a/contao/dca/tl_module.php b/contao/dca/tl_module.php
index b5a3abf..e5b05cc 100644
--- a/contao/dca/tl_module.php
+++ b/contao/dca/tl_module.php
@@ -9,7 +9,7 @@ use Contao\StringUtil;
 $GLOBALS['TL_DCA']['tl_module']['palettes']['member_organizations'] = '{title_legend},name,headline,type;{eventmanager_legend},editPage;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 $GLOBALS['TL_DCA']['tl_module']['palettes']['member_events'] = '{title_legend},name,headline,type;{eventmanager_legend},editPage;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 $GLOBALS['TL_DCA']['tl_module']['palettes']['event_filter'] = '{title_legend},name,headline,type;{eventmanager_legend},cal_calendar,eventListDomId;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
-$GLOBALS['TL_DCA']['tl_module']['palettes']['eventmanager_map'] = '{title_legend},name,headline,type;{eventmanager_legend},mapShowOrganizations,mapShowExternalOrganizations,mapShowEvents,mapEventColor,mapOrganizationColor,mapCenterMode;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
+$GLOBALS['TL_DCA']['tl_module']['palettes']['eventmanager_map'] = '{title_legend},name,headline,type;{eventmanager_legend},mapShowOrganizations,organizationTypeTags,mapShowExternalOrganizations,mapShowEvents,mapEventColor,mapOrganizationColor,mapCenterMode;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 $GLOBALS['TL_DCA']['tl_module']['palettes']['organization_edit'] = '{title_legend},name,headline,type;{eventmanager_legend},listPage,logoFolder,organizationTypeTags;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 $GLOBALS['TL_DCA']['tl_module']['palettes']['event_edit'] = '{title_legend},name,headline,type;{eventmanager_legend},listPage,eventFolder,termsPage,frontendAuthorId,frontendArchiveId,eventTypeTags;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 
diff --git a/src/Controller/Frontend/EventMapController.php b/src/Controller/Frontend/EventMapController.php
index 33bc5d6..faa5eb5 100644
--- a/src/Controller/Frontend/EventMapController.php
+++ b/src/Controller/Frontend/EventMapController.php
@@ -8,6 +8,7 @@ use Contao\CoreBundle\Controller\FrontendModule\AbstractFrontendModuleController
 use Contao\CoreBundle\DependencyInjection\Attribute\AsFrontendModule;
 use Contao\CoreBundle\Twig\FragmentTemplate;
 use Contao\ModuleModel;
+use Contao\StringUtil;
 use MummertMedia\EventManagerBundle\Service\MapModuleDataProvider;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
@@ -33,6 +34,10 @@ class EventMapController extends AbstractFrontendModuleController
         $showOrganizations = '1' === (string) ($model->mapShowOrganizations ?? '');
         $showExternalOrganizations = '1' === (string) ($model->mapShowExternalOrganizations ?? '');
         $showEvents = '1' === (string) ($model->mapShowEvents ?? '');
+        $selectedOrganizationTagIds = array_values(array_unique(array_filter(
+            array_map('intval', StringUtil::deserialize($model->organizationTypeTags ?? null, true)),
+            static fn (int $tagId): bool => $tagId > 0,
+        )));
         $centerMode = (string) ($model->mapCenterMode ?? self::DEFAULT_CENTER_MODE);
         $eventColor = $this->normalizeHexColor((string) ($model->mapEventColor ?? self::DEFAULT_EVENT_COLOR));
         $organizationColor = $this->normalizeHexColor((string) ($model->mapOrganizationColor ?? $eventColor), $eventColor);
@@ -53,10 +58,10 @@ class EventMapController extends AbstractFrontendModuleController
         $template->set('mapCenterLng', trim((string) ($model->mapCenterLng ?? '')));
         $template->set('mapCenterZoom', (int) ($model->mapCenterZoom ?? 12));
         $template->set('mapItemsJson', json_encode(
-            $this->mapModuleDataProvider->getMapItems($showOrganizations, $showEvents, $showExternalOrganizations),
+            $this->mapModuleDataProvider->getMapItems($showOrganizations, $showEvents, $showExternalOrganizations, $selectedOrganizationTagIds),
             \JSON_HEX_TAG | \JSON_HEX_AMP | \JSON_HEX_APOS | \JSON_HEX_QUOT | \JSON_UNESCAPED_UNICODE | \JSON_THROW_ON_ERROR,
         ));
-        $template->set('mapOrganizationTags', $this->mapModuleDataProvider->getOrganizationTags());
+        $template->set('mapOrganizationTags', $this->mapModuleDataProvider->getOrganizationTags($selectedOrganizationTagIds));
 
         return $template->getResponse();
     }
diff --git a/src/Service/MapModuleDataProvider.php b/src/Service/MapModuleDataProvider.php
index a764dbb..06f8010 100644
--- a/src/Service/MapModuleDataProvider.php
+++ b/src/Service/MapModuleDataProvider.php
@@ -26,12 +26,17 @@ class MapModuleDataProvider
     /**
         * @return list<array{type:string,markerType:string,id:int,title:string,latitude:float,longitude:float,extra:array<string,mixed>}>
      */
-    public function getMapItems(bool $includeOrganizations = true, bool $includeEvents = true, bool $includeExternalOrganizations = false): array
+    public function getMapItems(bool $includeOrganizations = true, bool $includeEvents = true, bool $includeExternalOrganizations = false, array $selectedOrganizationTagIds = []): array
     {
         if (!$includeOrganizations && !$includeEvents) {
             return [];
         }
 
+        $selectedOrganizationTagIds = array_values(array_unique(array_map(
+            static fn (int|string $tagId): string => (string) (int) $tagId,
+            array_filter($selectedOrganizationTagIds, static fn (int|string $tagId): bool => (int) $tagId > 0),
+        )));
+
         $locationTable = $this->resolveExistingTable(['tl_location']);
         $organizationTable = $this->resolveExistingTable(['tl_organization', 'tl_organisation']);
         $locationGeoColumns = null !== $locationTable ? $this->resolveGeoColumns($locationTable) : null;
@@ -76,6 +81,12 @@ class MapModuleDataProvider
 
                 $seen['organisation'][$id] = true;
                 $tagData = $organizationTagMap[$id] ?? ['ids' => [], 'labels' => []];
+
+                if ([] !== $selectedOrganizationTagIds
+                    && [] === array_intersect($selectedOrganizationTagIds, $tagData['ids'] ?? [])) {
+                    continue;
+                }
+
                 $items[] = [
                     'type' => 'organisation',
                     'markerType' => $this->buildOrganizationMarkerType($tagData['ids']),
@@ -152,12 +163,17 @@ class MapModuleDataProvider
     /**
      * @return list<array{id:int,label:string}>
      */
-    public function getOrganizationTags(): array
+    public function getOrganizationTags(array $selectedTagIds = []): array
     {
         if (!$this->tableExists('tl_tags')) {
             return [];
         }
 
+        $selectedTagIds = array_values(array_unique(array_filter(
+            array_map('intval', $selectedTagIds),
+            static fn (int $tagId): bool => $tagId > 0,
+        )));
+
         $columns = $this->getColumnMap('tl_tags');
         $labelColumn = isset($columns['title']) ? 'title' : (isset($columns['tag']) ? 'tag' : null);
 
@@ -171,6 +187,12 @@ class MapModuleDataProvider
             ->from('tl_tags', 't')
             ->orderBy(sprintf('t.%s', $labelColumn), 'ASC');
 
+        if ([] !== $selectedTagIds) {
+            $qb
+                ->andWhere('t.id IN (:selectedTagIds)')
+                ->setParameter('selectedTagIds', $selectedTagIds, ArrayParameterType::INTEGER);
+        }
+
         if (isset($columns['invisible'])) {
             $qb->andWhere("(t.invisible IS NULL OR t.invisible = '' OR t.invisible = '0')");
         }