diff --git a/src/bach/breadcrumbs.ts b/src/bach/breadcrumbs.ts
index a47f6e4..3e2f6cf 100644
--- a/src/bach/breadcrumbs.ts
+++ b/src/bach/breadcrumbs.ts
@@ -11,7 +11,8 @@ export async function searchPagesForBreadcrumbs<TCollection extends string>(
   pagePath: string,
   pages: PageItem<TCollection>[],
   prefix: { label: string; href: string }[],
-  titleMap: Map<string, string>
+  titleMap: Map<string, string>,
+  iconMap: Map<string, string>
 ): Promise<{ label: string; href: string }[] | null> {
   const normalizedTarget = normalizePagePath(pagePath)
 
@@ -40,11 +41,11 @@ export async function searchPagesForBreadcrumbs<TCollection extends string>(
           return groupPrefix
         }
       } else {
-        const firstChildHref = findFirstHref(buildPages(item.pages, 0, '', titleMap, new Map()))
+        const firstChildHref = findFirstHref(buildPages(item.pages, 0, '', titleMap, new Map(), iconMap))
         groupPrefix.push({ label: item.group, href: firstChildHref ?? '/' })
       }
 
-      const result = await searchPagesForBreadcrumbs(pagePath, item.pages, groupPrefix, titleMap)
+      const result = await searchPagesForBreadcrumbs(pagePath, item.pages, groupPrefix, titleMap, iconMap)
       if (result) return result
     }
   }
@@ -63,12 +64,13 @@ export async function buildBreadcrumbs<TCollection extends string>(
   config: DocsConfig<TCollection>,
   entryId: string,
   pageTitle: string,
-  titleMap: Map<string, string>
+  titleMap: Map<string, string>,
+  iconMap: Map<string, string>
 ): Promise<{ label: string; href: string }[]> {
   const pagePath = normalizeEntryId(entryId)
 
   for (const tab of config.navigation.tabs) {
-    const crumbs = await searchPagesForBreadcrumbs(pagePath, tab.pages, [], titleMap)
+    const crumbs = await searchPagesForBreadcrumbs(pagePath, tab.pages, [], titleMap, iconMap)
     if (crumbs) {
       // Remove the active page itself — breadcrumbs show only the parent path
       return crumbs.slice(0, -1)
diff --git a/src/bach/content.ts b/src/bach/content.ts
index 290f1c3..2652d60 100644
--- a/src/bach/content.ts
+++ b/src/bach/content.ts
@@ -56,6 +56,7 @@ export function buildSidebarEntryMap(
         id: entry.id,
         title: entry.data.title,
         method: 'method' in entry.data && typeof entry.data.method === 'string' ? entry.data.method : undefined,
+        icon: 'icon' in entry.data && typeof entry.data.icon === 'string' ? entry.data.icon : undefined,
         sortOrder:
           'sortOrder' in entry.data && typeof entry.data.sortOrder === 'number' ? entry.data.sortOrder : undefined,
       }))
@@ -74,6 +75,7 @@ export function buildSidebarEntryMap(
 export function buildCollectionsSidebarData(allEntries: Map<string, DynamicCollectionEntry[]>) {
   const titleMap = new Map<string, string>()
   const methodMap = new Map<string, string>()
+  const iconMap = new Map<string, string>()
   const articles: ArticleEntry[] = []
 
   for (const [, entries] of allEntries) {
@@ -86,6 +88,11 @@ export function buildCollectionsSidebarData(allEntries: Map<string, DynamicColle
         methodMap.set(entry.id, method)
         methodMap.set(slug, method)
       }
+      const icon = 'icon' in entry.data && typeof entry.data.icon === 'string' ? entry.data.icon : undefined
+      if (icon) {
+        iconMap.set(entry.id, icon)
+        iconMap.set(slug, icon)
+      }
       articles.push({
         slug,
         title: entry.data.title,
@@ -94,7 +101,7 @@ export function buildCollectionsSidebarData(allEntries: Map<string, DynamicColle
     }
   }
 
-  return { titleMap, methodMap, articles }
+  return { titleMap, methodMap, iconMap, articles }
 }
 
 /**
diff --git a/src/bach/schemas/docs.ts b/src/bach/schemas/docs.ts
index adf8150..e176e81 100644
--- a/src/bach/schemas/docs.ts
+++ b/src/bach/schemas/docs.ts
@@ -3,6 +3,7 @@ import { z } from 'astro/zod'
 export const docsSchema = z.object({
   title: z.string(),
   description: z.string().optional(),
+  icon: z.string().optional(),
   prose: z.boolean().default(true),
 })
 
diff --git a/src/bach/site.ts b/src/bach/site.ts
index 27ec2ba..a16c69d 100644
--- a/src/bach/site.ts
+++ b/src/bach/site.ts
@@ -18,6 +18,7 @@ export interface SiteContext {
   sidebar: SidebarTreeResult
   titleMap: Map<string, string>
   methodMap: Map<string, string>
+  iconMap: Map<string, string>
   articles: ArticleEntry[]
   defaultEntriesBySlug: Map<string, DynamicCollectionEntry>
 }
@@ -49,9 +50,9 @@ export class BachSite<TCollection extends string = string> {
 
     const defaultCollection = getDefaultCollection(this._config)
     const allEntries = await loadCollections(this._config)
-    const { titleMap, methodMap, articles } = buildCollectionsSidebarData(allEntries)
+    const { titleMap, methodMap, iconMap, articles } = buildCollectionsSidebarData(allEntries)
     const collectionsMap = buildSidebarEntryMap(allEntries)
-    const sidebar = await buildSidebarTree(this._config, titleMap, methodMap, collectionsMap)
+    const sidebar = await buildSidebarTree(this._config, titleMap, methodMap, iconMap, collectionsMap)
 
     const defaultEntriesBySlug = new Map<string, DynamicCollectionEntry>()
     for (const entry of allEntries.get(defaultCollection) ?? []) {
@@ -64,6 +65,7 @@ export class BachSite<TCollection extends string = string> {
       sidebar,
       titleMap,
       methodMap,
+      iconMap,
       articles,
       defaultEntriesBySlug,
     }
@@ -89,7 +91,13 @@ export class BachSite<TCollection extends string = string> {
     if (isApi) {
       breadcrumbs = [{ label: apiData!.apiLabel }]
     } else {
-      breadcrumbs = await buildBreadcrumbs(siteContext.config, entry.id, title, siteContext.titleMap)
+      breadcrumbs = await buildBreadcrumbs(
+        siteContext.config,
+        entry.id,
+        title,
+        siteContext.titleMap,
+        siteContext.iconMap
+      )
     }
 
     const { prev, next } = getAdjacentPages(sidebarTree, pathname)
diff --git a/src/bach/tree.ts b/src/bach/tree.ts
index a4f76f9..1689999 100644
--- a/src/bach/tree.ts
+++ b/src/bach/tree.ts
@@ -50,6 +50,7 @@ export interface CollectionEntryData {
   id: string
   title: string
   method?: string
+  icon?: string
   sortOrder?: number
 }
 
@@ -67,6 +68,7 @@ export function buildPages<TCollection extends string>(
   parentPath: string,
   titleMap: Map<string, string>,
   methodMap: Map<string, string>,
+  iconMap: Map<string, string>,
   collectionsMap?: Map<TCollection, CollectionEntryData[]>
 ): SidebarNode[] {
   const nodes: SidebarNode[] = []
@@ -84,6 +86,7 @@ export function buildPages<TCollection extends string>(
         href,
         path: normalizedPath,
         method: methodMap.get(normalizedPath),
+        icon: iconMap.get(normalizedPath),
       }
       nodes.push(articleNode)
     } else {
@@ -110,12 +113,14 @@ export function buildPages<TCollection extends string>(
           slug: groupSlug,
           path: groupPath,
           href: depth > 0 ? href : undefined,
+          icon: item.icon,
           children: sortedEntries.map((entry) => ({
             type: 'article',
             title: entry.title,
             href: `/${entry.id}`,
             path: entry.id,
             method: entry.method,
+            icon: entry.icon,
           })),
         }
         nodes.push(categoryNode)
@@ -136,7 +141,7 @@ export function buildPages<TCollection extends string>(
         childrenPages = item.pages
       }
 
-      const children = buildPages(childrenPages, depth + 1, groupPath, titleMap, methodMap, collectionsMap)
+      const children = buildPages(childrenPages, depth + 1, groupPath, titleMap, methodMap, iconMap, collectionsMap)
 
       const categoryNode: SidebarCategoryNode = {
         type: 'category',
@@ -144,6 +149,7 @@ export function buildPages<TCollection extends string>(
         slug: groupSlug,
         path: groupPath,
         href: depth > 0 ? href : undefined,
+        icon: item.icon,
         children,
       }
       nodes.push(categoryNode)
@@ -195,9 +201,11 @@ export async function buildSidebarTree<TCollection extends string>(
   config: DocsConfig<TCollection>,
   titleMap: Map<string, string>,
   methodMap?: Map<string, string>,
+  iconMap?: Map<string, string>,
   collectionsMap?: Map<TCollection, CollectionEntryData[]>
 ): Promise<SidebarTreeResult> {
   const _methodMap = methodMap ?? new Map()
+  const _iconMap = iconMap ?? new Map()
 
   const tabs: TabInfo[] = []
   const trees: Record<string, SidebarNode[]> = {}
@@ -205,7 +213,7 @@ export async function buildSidebarTree<TCollection extends string>(
 
   for (const tabItem of config.navigation.tabs) {
     const tabSlug = slugify(tabItem.tab)
-    const tabTree = buildPages(tabItem.pages, 0, '', titleMap, _methodMap, collectionsMap)
+    const tabTree = buildPages(tabItem.pages, 0, '', titleMap, _methodMap, _iconMap, collectionsMap)
 
     const firstHref = findFirstHref(tabTree) ?? '/'
 
diff --git a/src/bach/types.ts b/src/bach/types.ts
index e37069f..8ea3a26 100644
--- a/src/bach/types.ts
+++ b/src/bach/types.ts
@@ -17,6 +17,7 @@ export interface SidebarCategoryNode {
   slug: string
   path: string
   href?: string
+  icon?: string
   children: SidebarNode[]
 }
 
@@ -26,6 +27,7 @@ export interface SidebarArticleNode {
   href: string
   path: string
   method?: string
+  icon?: string
 }
 
 export type SidebarNode = SidebarCategoryNode | SidebarArticleNode
@@ -33,12 +35,14 @@ export type SidebarNode = SidebarCategoryNode | SidebarArticleNode
 export interface GroupItem<TCollection extends string = string> {
   group: string
   root?: string
+  icon?: string
   pages: PageItem<TCollection>[]
 }
 
 export interface CollectionGroupItem<TCollection extends string = string> {
   group: string
   root?: string
+  icon?: string
   collection: TCollection
 }
 
diff --git a/src/components/sidebar-tree-view.tsx b/src/components/sidebar-tree-view.tsx
index fbf5b10..8c33867 100644
--- a/src/components/sidebar-tree-view.tsx
+++ b/src/components/sidebar-tree-view.tsx
@@ -1,9 +1,16 @@
 import { useState } from 'react'
+import { icons } from 'lucide-react'
 import { Badge } from '@/components/ui/badge'
 import { cn } from '@/lib/utils'
 import { hasActiveChild, isPathActive } from '@/bach/nav'
 import type { SidebarCategoryNode, SidebarNode } from '@/bach/types'
 
+function TreeIcon({ name }: { name: string }) {
+  const Icon = icons[name as keyof typeof icons]
+  if (!Icon) return null
+  return <Icon className="h-4 w-4 shrink-0" />
+}
+
 function SidebarMethodBadge({ method }: { method: string }) {
   return (
     <Badge
@@ -62,7 +69,10 @@ function NestedCategory({
               : 'text-stone-600 hover:bg-black/5 hover:text-stone-900 dark:text-stone-400 dark:hover:bg-white/5 dark:hover:text-stone-100'
           }`}
         >
-          <span>{node.label}</span>
+          <span className="flex items-center gap-1.5">
+            {node.icon && <TreeIcon name={node.icon} />}
+            {node.label}
+          </span>
           <span
             onClick={(e) => {
               e.preventDefault()
@@ -79,7 +89,10 @@ function NestedCategory({
           onClick={() => setExpanded((v) => !v)}
           className={`${labelClass} cursor-pointer text-stone-600 hover:bg-black/5 hover:text-stone-900 dark:text-stone-400 dark:hover:bg-white/5 dark:hover:text-stone-100`}
         >
-          <span>{node.label}</span>
+          <span className="flex items-center gap-1.5">
+            {node.icon && <TreeIcon name={node.icon} />}
+            {node.label}
+          </span>
           {chevron}
         </button>
       )}
@@ -130,12 +143,13 @@ function ChildNode({
     <li>
       <a
         href={node.href}
-        className={`flex items-center rounded-md ${nested ? 'pl-5' : 'pl-2'} pr-2 py-1.5 ${textSize === 'base' ? 'text-base' : 'text-sm'} transition-colors ${
+        className={`flex items-center gap-1.5 rounded-md ${nested ? 'pl-5' : 'pl-2'} pr-2 py-1.5 ${textSize === 'base' ? 'text-base' : 'text-sm'} transition-colors ${
           active
             ? `text-primary bg-primary/10 dark:bg-primary/15 font-medium${nested ? ' relative before:absolute before:left-2.5 before:top-2 before:bottom-2 before:w-px before:bg-primary' : ''}`
             : 'text-stone-600 hover:bg-black/5 hover:text-stone-900 dark:text-stone-400 dark:hover:bg-white/5 dark:hover:text-stone-100'
         }`}
       >
+        {node.icon && <TreeIcon name={node.icon} />}
         <span className="min-w-0 truncate">{node.title}</span>
         {node.method && <SidebarMethodBadge method={node.method} />}
       </a>
@@ -151,8 +165,9 @@ export default function SidebarTreeView({ nodes, currentPath, textSize = 'sm' }:
           return (
             <div key={node.path} className="mb-8">
               <h3
-                className={`mb-[.625rem] pl-2 pr-2 ${textSize === 'base' ? 'text-base' : 'text-sm'} font-semibold text-[rgb(22,27,30)] dark:text-[rgb(222,226,230)]`}
+                className={`mb-[.625rem] flex items-center gap-1.5 pl-2 pr-2 ${textSize === 'base' ? 'text-base' : 'text-sm'} font-semibold text-[rgb(22,27,30)] dark:text-[rgb(222,226,230)]`}
               >
+                {node.icon && <TreeIcon name={node.icon} />}
                 {node.label}
               </h3>
               <ul className="space-y-0.5">