diff --git a/modules/market_management/service.php b/modules/market_management/service.php
index c066179..ddf14a9 100644
--- a/modules/market_management/service.php
+++ b/modules/market_management/service.php
@@ -502,6 +502,11 @@ function market_management_search_markets(PDO $pdo, array $input): array
     $sortColumn = match ($sort) {
         'earliest_date' => 'MIN(d.date)',
         'updated_at' => 'm.updated_at',
+        'category_name' => 'c.name',
+        'organizer_name' => 'p.name',
+        'website_url' => 'm.website_url',
+        'occurrence_count' => 'COUNT(DISTINCT o.id)',
+        'status' => 'CASE WHEN m.archived_at IS NULL THEN 0 ELSE 1 END',
         default => 'm.name',
     };
 
diff --git a/modules/shared/auth/ui/home.php b/modules/shared/auth/ui/home.php
index c2e545f..35a2bf1 100644
--- a/modules/shared/auth/ui/home.php
+++ b/modules/shared/auth/ui/home.php
@@ -195,6 +195,8 @@ function auth_render_market_definitions_content(array $marketTable): string
     $rows = $marketTable['rows'] ?? $marketTable;
     $categories = $marketTable['categories'] ?? [];
     $organizers = $marketTable['organizers'] ?? [];
+    $sortColumn = (string) ($marketTable['sort_column'] ?? 'name');
+    $sortDirection = strtoupper((string) ($marketTable['sort_direction'] ?? 'ASC')) === 'DESC' ? 'DESC' : 'ASC';
     $html = [];
     $html[] = '<div data-market-definitions-content="true" data-market-definitions-csrf-token="' . auth_escape_html(auth_csrf_token()) . '"><section class="sg-card-list-page" aria-label="Märkte">';
     $html[] = '<article class="sg-card" data-component="basic-card"><div class="sg-card-segment sg-card-segment--body sg-card-segment--gray" data-component-part="card-body"><div class="sg-component-row sg-basic-card__actions"><button class="sg-interaction-element sg-button sg-button--active" type="button" aria-haspopup="dialog" aria-expanded="false" data-component="button" data-market-definition-create>Neuer Markt</button></div></div></article>';
@@ -202,9 +204,26 @@ function auth_render_market_definitions_content(array $marketTable): string
     $html[] = '<div class="sg-large-table__viewport" data-component-part="large-table-viewport">';
     $html[] = '<div class="sg-card-segment sg-card-segment--header sg-card-segment--darkblue sg-large-table__title-segment" data-component-part="large-table-header"><div class="sg-strong">Märkte</div></div>';
     $html[] = '<div class="sg-card-segment sg-card-segment--body sg-card-segment--white sg-large-table__row sg-large-table__row--header" role="row" data-component-part="large-table-header-row">';
-    $definitionColumns = ['Markt', 'Kategorie', 'Veranstalter', 'Website', 'Durchführungen', 'Status'];
-    foreach ($definitionColumns as $index => $label) {
-        $html[] = '<div class="sg-large-table__cell sg-large-table__cell--header" role="columnheader" data-default-width="' . auth_large_table_default_width(count($definitionColumns)) . '"><span class="sg-large-table__sort-label">' . auth_escape_html($label) . '</span>' . auth_large_table_resize_handle($label, $index, count($definitionColumns)) . '</div>';
+    $definitionColumns = [
+        'name' => 'Markt',
+        'category_name' => 'Kategorie',
+        'organizer_name' => 'Veranstalter',
+        'website_url' => 'Website',
+        'occurrence_count' => 'Durchführungen',
+        'status' => 'Status',
+    ];
+    $definitionColumnIndex = 0;
+    foreach ($definitionColumns as $column => $label) {
+        $isActive = $column === $sortColumn;
+        $headerDirection = $isActive ? strtolower($sortDirection) : 'none';
+        $iconDirection = $isActive && $sortDirection === 'DESC' ? 'descending' : 'ascending';
+        $targetDirection = $isActive && $sortDirection === 'ASC' ? 'DESC' : 'ASC';
+        $ariaLabel = $isActive
+            ? $label . ' ' . ($sortDirection === 'ASC' ? 'aufsteigend sortiert' : 'absteigend sortiert')
+            : $label . ' sortieren';
+        $sortButton = '<button class="sg-large-table__sort-button" type="button" aria-label="' . auth_escape_html($ariaLabel) . '" data-market-definition-sort data-market-definition-sort-column="' . auth_escape_html($column) . '" data-market-definition-sort-direction="' . auth_escape_html($targetDirection) . '"><span class="sg-large-table__sort-label">' . auth_escape_html($label) . '</span><span class="sg-large-table__sort-icon" aria-hidden="true" data-direction="' . auth_escape_html($iconDirection) . '"></span></button>';
+        $html[] = '<div class="sg-large-table__cell sg-large-table__cell--header" role="columnheader" aria-sort="' . auth_escape_html($headerDirection) . '" data-sort-key="' . $definitionColumnIndex . '" data-default-width="' . auth_large_table_default_width(count($definitionColumns)) . '">' . $sortButton . auth_large_table_resize_handle($label, $definitionColumnIndex, count($definitionColumns)) . '</div>';
+        $definitionColumnIndex++;
     }
     $html[] = '</div>';
     foreach ($rows as $index => $row) {
@@ -1333,6 +1352,7 @@ JS;
     echo "  const deleteMarketDefinition = async (submit) => { if (submit.disabled || !activeMarket?.id) { return; } const card = submit.closest('[data-shared-editable-action-card]'); const input = card?.querySelector('[data-shared-editable-card-delete-input]'); const status = card?.querySelector('[data-market-definition-delete-status]'); if (!card || !input || input.value !== 'DELETE') { return; } if (status) { status.textContent = 'Löschen läuft …'; } submit.disabled = true; submit.setAttribute('aria-disabled', 'true'); try { const response = await fetch('/api/market-definition.php', { method: 'POST', credentials: 'same-origin', headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': definitionContent.dataset.marketDefinitionsCsrfToken || '' }, body: JSON.stringify({ action: 'delete', id: activeMarket.id, confirmation: input.value }) }); const result = await response.json(); if (!response.ok || !result.ok) { throw new Error(result.error || 'Löschen fehlgeschlagen.'); } const row = activeMarket.trigger.closest('[data-market-definition-row]'); row?.remove(); closeDrawer(); } catch (error) { if (status) { status.textContent = error instanceof Error ? error.message : 'Löschen fehlgeschlagen.'; } submit.disabled = false; submit.setAttribute('aria-disabled', 'false'); } };";
     echo "  const showReadCard = (trigger) => { activeMarket = { id: trigger.dataset.marketDefinitionId || '', trigger }; drawer.querySelector('[data-market-definition-read-title]').textContent = trigger.dataset.marketDefinitionName || 'Markt'; readCard.querySelector('[data-market-definition-read-name]').textContent = trigger.dataset.marketDefinitionName || 'Nicht hinterlegt'; readCard.querySelector('[data-market-definition-read-category]').textContent = trigger.dataset.marketDefinitionCategoryName || 'Nicht hinterlegt'; readCard.querySelector('[data-market-definition-read-organizer]').textContent = trigger.dataset.marketDefinitionOrganizerName || 'Nicht hinterlegt'; readCard.querySelector('[data-market-definition-read-website]').textContent = trigger.dataset.marketDefinitionWebsite || 'Nicht hinterlegt'; const title = form.querySelector('[data-market-definition-form-title]'); if (title) { title.textContent = 'Markt bearbeiten'; } const name = form.querySelector('[data-market-definition-name]'); const category = form.querySelector('[data-market-definition-category]'); const organizer = form.querySelector('[data-market-definition-organizer]'); const website = form.querySelector('[data-market-definition-website]'); if (name) { name.value = trigger.dataset.marketDefinitionName || ''; } if (category) { category.value = trigger.dataset.marketDefinitionCategoryId || ''; } if (organizer) { organizer.value = trigger.dataset.marketDefinitionOrganizerId || ''; } if (website) { website.value = trigger.dataset.marketDefinitionWebsite === 'Nicht hinterlegt' ? '' : (trigger.dataset.marketDefinitionWebsite || ''); } syncNewOrganizerFields(); if (sharedCard && window.SharedEditableActionCard) { window.SharedEditableActionCard.setEditMode(sharedCard, false); } setDrawerState(true); };";
     echo "  definitionContent.addEventListener('click', (event) => { const trigger = event.target.closest('[data-market-definition-open]'); if (!trigger || !definitionContent.contains(trigger)) { return; } event.preventDefault(); event.stopPropagation(); if (window.matchMedia('(max-width: 767px)').matches) { openMarketDefinitionMobileDetail(trigger); } else { showReadCard(trigger); } }, true);";
+    echo "  definitionContent.addEventListener('click', (event) => { const sortButton = event.target.closest('[data-market-definition-sort]'); if (!sortButton || !definitionContent.contains(sortButton)) { return; } event.preventDefault(); const url = new URL(window.location.href); url.searchParams.set('portal_module', 'Märkte'); url.searchParams.set('portal_section', 'Märkte'); url.searchParams.set('market_definition_sort', sortButton.dataset.marketDefinitionSortColumn || 'name'); url.searchParams.set('market_definition_dir', sortButton.dataset.marketDefinitionSortDirection || 'ASC'); window.location.assign(url.toString()); });";
     echo "  definitionContent.addEventListener('click', (event) => { const deleteSubmit = event.target.closest('[data-market-definition-delete-submit]'); if (deleteSubmit) { void deleteMarketDefinition(deleteSubmit); return; } const trigger = event.target.closest('[data-market-definition-open]'); if (trigger) { const deleteButton = drawer.querySelector('[data-market-definition-delete]'); if (deleteButton) { deleteButton.hidden = false; } } if (event.target.closest('[data-market-definition-create]')) { const deleteButton = drawer.querySelector('[data-market-definition-delete]'); if (deleteButton) { deleteButton.hidden = true; } } });";
     echo "  const openEditCard = () => { if (!activeMarket) { return; } const title = form.querySelector('[data-market-definition-form-title]'); if (title) { title.textContent = 'Markt bearbeiten'; } const name = form.querySelector('[data-market-definition-name]'); const category = form.querySelector('[data-market-definition-category]'); const organizer = form.querySelector('[data-market-definition-organizer]'); const website = form.querySelector('[data-market-definition-website]'); if (name) { name.value = activeMarket.trigger.dataset.marketDefinitionName || ''; } if (category) { category.value = activeMarket.trigger.dataset.marketDefinitionCategoryId || ''; } if (organizer) { organizer.value = activeMarket.trigger.dataset.marketDefinitionOrganizerId || ''; } if (website) { website.value = activeMarket.trigger.dataset.marketDefinitionWebsite === 'Nicht hinterlegt' ? '' : (activeMarket.trigger.dataset.marketDefinitionWebsite || ''); } syncNewOrganizerFields(); };";
     echo "  editButton.addEventListener('click', (event) => { event.preventDefault(); openEditCard(); });";
diff --git a/public/index.php b/public/index.php
index ee4c3cf..db30c74 100644
--- a/public/index.php
+++ b/public/index.php
@@ -79,16 +79,20 @@ if ($currentUser !== null) {
         'page_size' => 20,
     ];
     $marketOccurrencesTable['has_more'] = count($marketOccurrencesTable['rows']) >= $marketLimit;
+    $marketDefinitionSort = (string) ($_GET['market_definition_sort'] ?? 'name');
+    $marketDefinitionDirection = strtoupper((string) ($_GET['market_definition_dir'] ?? 'ASC'));
     $marketDefinitionsTable = [
         'rows' => market_management_search_markets($pdo, [
             'include_archived' => false,
-            'sort' => 'name',
-            'sort_direction' => 'ASC',
+            'sort' => $marketDefinitionSort,
+            'sort_direction' => $marketDefinitionDirection,
             'limit' => 100,
             'offset' => 0,
         ]),
         'categories' => market_management_list_categories($pdo),
         'organizers' => market_management_list_organizers($pdo),
+        'sort_column' => $marketDefinitionSort,
+        'sort_direction' => $marketDefinitionDirection,
     ];
     if ((string) ($_GET['bestellungen_fragment'] ?? '') === '1') {
         echo auth_render_bestellungen_content($bestellungenTable);