diff --git a/src/components/SidebarControls.tsx b/src/components/SidebarControls.tsx
index 6a438b4..ab57a62 100644
--- a/src/components/SidebarControls.tsx
+++ b/src/components/SidebarControls.tsx
@@ -104,12 +104,26 @@ function CheckList({
   );
 }
 
-function FilterSection({ title, activeCount, children, dataFor, open = false }: { title: string; activeCount: number; children: ReactNode; dataFor?: string; open?: boolean }) {
+function FilterSection({ title, activeCount, children, dataFor, open = false, onClear }: { title: string; activeCount: number; children: ReactNode; dataFor?: string; open?: boolean; onClear?: () => void }) {
+  const clearable = activeCount > 0 && Boolean(onClear);
   return (
     <details className="section" data-for={dataFor} open={open || activeCount > 0}>
       <summary>
         <ChevronIcon />
-        {title} <span className={`count ${activeCount ? "active" : ""}`}>{activeCount}</span>
+        {title}
+        {clearable ? (
+          <button
+            type="button"
+            className="count active clearable"
+            aria-label={`Clear ${title} filter`}
+            onClick={(e) => { e.preventDefault(); e.stopPropagation(); onClear?.(); }}
+          >
+            <span className="count-num">{activeCount}</span>
+            <span className="count-clear">Clear all</span>
+          </button>
+        ) : (
+          <span className={`count ${activeCount ? "active" : ""}`}>{activeCount}</span>
+        )}
       </summary>
       <div className="section-body">{children}</div>
     </details>
@@ -202,7 +216,14 @@ export function SidebarControls({
         </label>
       </div>
 
-      <FilterSection title="Organizations" activeCount={orgSelection.size} open>
+      <FilterSection
+        title="Organizations"
+        activeCount={orgSelection.size}
+        open
+        onClear={() => ticketMode
+          ? onActiveFiltersChange({ ...activeFilters, orgs: new Set() })
+          : onRepoFiltersChange({ ...repoFilters, orgs: new Set() })}
+      >
         <CheckList
           entries={[...orgEntries.entries()]}
           selected={orgSelection}
@@ -216,32 +237,32 @@ export function SidebarControls({
 
       {ticketMode ? (
         <>
-          <FilterSection title="Repositories" activeCount={activeFilters.repos.size} dataFor={prMode ? "prs-only" : "issues-only"}>
+          <FilterSection title="Repositories" activeCount={activeFilters.repos.size} dataFor={prMode ? "prs-only" : "issues-only"} onClear={() => onActiveFiltersChange({ ...activeFilters, repos: new Set() })}>
             <CheckList entries={[...activeFacets.repos.entries()]} selected={activeFilters.repos} onToggle={(value) => onActiveFiltersChange({ ...activeFilters, repos: toggleSetValue(activeFilters.repos, value) })} />
           </FilterSection>
-          <FilterSection title="Labels" activeCount={activeFilters.labels.size} dataFor={prMode ? "prs-only" : "issues-only"}>
+          <FilterSection title="Labels" activeCount={activeFilters.labels.size} dataFor={prMode ? "prs-only" : "issues-only"} onClear={() => onActiveFiltersChange({ ...activeFilters, labels: new Set() })}>
             <CheckList entries={[...activeFacets.labels.entries()]} selected={activeFilters.labels} showSwatch onToggle={(value) => onActiveFiltersChange({ ...activeFilters, labels: toggleSetValue(activeFilters.labels, value) })} />
           </FilterSection>
-          <FilterSection title="Authors" activeCount={activeFilters.authors.size} dataFor={prMode ? "prs-only" : "issues-only"}>
+          <FilterSection title="Authors" activeCount={activeFilters.authors.size} dataFor={prMode ? "prs-only" : "issues-only"} onClear={() => onActiveFiltersChange({ ...activeFilters, authors: new Set() })}>
             <CheckList entries={[...activeFacets.authors.entries()]} selected={activeFilters.authors} onToggle={(value) => onActiveFiltersChange({ ...activeFilters, authors: toggleSetValue(activeFilters.authors, value) })} />
           </FilterSection>
-          <FilterSection title="Assignees" activeCount={activeFilters.assignees.size} dataFor={prMode ? "prs-only" : "issues-only"}>
+          <FilterSection title="Assignees" activeCount={activeFilters.assignees.size} dataFor={prMode ? "prs-only" : "issues-only"} onClear={() => onActiveFiltersChange({ ...activeFilters, assignees: new Set() })}>
             <CheckList entries={[...activeFacets.assignees.entries()]} selected={activeFilters.assignees} onToggle={(value) => onActiveFiltersChange({ ...activeFilters, assignees: toggleSetValue(activeFilters.assignees, value) })} />
           </FilterSection>
         </>
       ) : (
         <>
-          <FilterSection title="Languages" activeCount={repoFilters.languages.size} dataFor="repos-only">
+          <FilterSection title="Languages" activeCount={repoFilters.languages.size} dataFor="repos-only" onClear={() => onRepoFiltersChange({ ...repoFilters, languages: new Set() })}>
             <CheckList entries={[...repoFacets.languages.entries()]} selected={repoFilters.languages} languageDot onToggle={(value) => onRepoFiltersChange({ ...repoFilters, languages: toggleSetValue(repoFilters.languages, value) })} />
           </FilterSection>
-          <FilterSection title="Visibility" activeCount={repoFilters.visibility === "all" ? 0 : 1} dataFor="repos-only" open>
+          <FilterSection title="Visibility" activeCount={repoFilters.visibility === "all" ? 0 : 1} dataFor="repos-only" open onClear={() => onRepoFiltersChange({ ...repoFilters, visibility: "all" })}>
             <div className="opt-group" role="tablist">
               {(["all", "public", "private"] as const).map((value) => (
                 <button key={value} className={repoFilters.visibility === value ? "active" : ""} onClick={() => onRepoFiltersChange({ ...repoFilters, visibility: value })}>{value[0].toUpperCase() + value.slice(1)}</button>
               ))}
             </div>
           </FilterSection>
-          <FilterSection title="Options" activeCount={Number(!repoFilters.includeForks) + Number(repoFilters.includeArchived)} dataFor="repos-only" open>
+          <FilterSection title="Options" activeCount={Number(!repoFilters.includeForks) + Number(repoFilters.includeArchived)} dataFor="repos-only" open onClear={() => onRepoFiltersChange({ ...repoFilters, includeForks: true, includeArchived: false })}>
             <div className="toggle-row">Include forks <button className={`toggle ${repoFilters.includeForks ? "on" : ""}`} role="switch" aria-checked={repoFilters.includeForks} onClick={() => onRepoFiltersChange({ ...repoFilters, includeForks: !repoFilters.includeForks })} /></div>
             <div className="toggle-row">Include archived <button className={`toggle ${repoFilters.includeArchived ? "on" : ""}`} role="switch" aria-checked={repoFilters.includeArchived} onClick={() => onRepoFiltersChange({ ...repoFilters, includeArchived: !repoFilters.includeArchived })} /></div>
           </FilterSection>
diff --git a/src/styles/layout-sidebar.css b/src/styles/layout-sidebar.css
index 5271f32..72de1f7 100644
--- a/src/styles/layout-sidebar.css
+++ b/src/styles/layout-sidebar.css
@@ -82,6 +82,15 @@
     padding: 1px 7px; border-radius: 10px;
   }
   .section .count.active { color: var(--text); background: var(--panel-3); border-color: var(--border); }
+  button.count.clearable {
+    font: inherit; line-height: 1; cursor: pointer;
+    display: inline-flex; align-items: center; justify-content: center;
+    min-width: 28px;
+  }
+  button.count.clearable .count-clear { display: none; }
+  button.count.clearable:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft, var(--panel-3)); }
+  button.count.clearable:hover .count-num { display: none; }
+  button.count.clearable:hover .count-clear { display: inline; font-weight: 600; }
   .section-body { padding: 2px 10px 12px; }
 
   /* Tab-scoped sidebar sections */