diff --git a/frontend/src/app/[locale]/guilds/[id]/page.tsx b/frontend/src/app/[locale]/guilds/[id]/page.tsx
index 6f1501a3..72d4b8ef 100644
--- a/frontend/src/app/[locale]/guilds/[id]/page.tsx
+++ b/frontend/src/app/[locale]/guilds/[id]/page.tsx
@@ -9,6 +9,7 @@ import { useGuildStore } from '@/store/guildStore'
 import { GuildStats } from '@/features/guilds/components/GuildStats'
 import { MemberList } from '@/features/guilds/components/MemberList'
 import { SpotlightCard } from '@/features/guilds/components/SpotlightCard'
+import { Leaderboard } from '@/features/guilds/components/Leaderboard'
 import { Button } from '@/components/ui/Button'
 import type { GuildRole } from '@/features/guilds/types'
 
@@ -155,6 +156,11 @@ export default function GuildDetailPage() {
           />
         </div>
 
+        {/* Reputation Leaderboard */}
+        <div className="mb-6">
+          <Leaderboard />
+        </div>
+
         {/* Tabs */}
         <div className="bg-slate-900/40 rounded-lg shadow-sm border border-slate-800/50 mb-6">
           <div className="border-b border-slate-800/50">
diff --git a/frontend/src/features/guilds/components/Leaderboard.tsx b/frontend/src/features/guilds/components/Leaderboard.tsx
new file mode 100644
index 00000000..ff092631
--- /dev/null
+++ b/frontend/src/features/guilds/components/Leaderboard.tsx
@@ -0,0 +1,209 @@
+'use client'
+
+import { useMemo, useState } from 'react'
+import { motion } from 'framer-motion'
+import { ArrowDownUp, Award, Medal, Trophy } from 'lucide-react'
+import { cn } from '@/lib/utils'
+
+type LeaderboardUser = {
+  id: string
+  displayName: string
+  avatarColor: string
+  reputationScore: number
+  totalBountiesCompleted: number
+}
+
+type SortKey = 'reputationScore' | 'totalBountiesCompleted'
+
+const leaderboardUsers: LeaderboardUser[] = [
+  { id: 'user-01', displayName: 'Nova Patel', avatarColor: 'from-amber-400 to-orange-500', reputationScore: 9875, totalBountiesCompleted: 42 },
+  { id: 'user-02', displayName: 'Orion Vega', avatarColor: 'from-slate-300 to-slate-500', reputationScore: 9340, totalBountiesCompleted: 38 },
+  { id: 'user-03', displayName: 'Lyra Chen', avatarColor: 'from-yellow-700 to-orange-900', reputationScore: 8990, totalBountiesCompleted: 35 },
+  { id: 'user-04', displayName: 'Mira Sol', avatarColor: 'from-indigo-500 to-purple-600', reputationScore: 8420, totalBountiesCompleted: 34 },
+  { id: 'user-05', displayName: 'Kai Morgan', avatarColor: 'from-cyan-500 to-blue-600', reputationScore: 8015, totalBountiesCompleted: 31 },
+  { id: 'user-06', displayName: 'Astra Quinn', avatarColor: 'from-pink-500 to-rose-600', reputationScore: 7880, totalBountiesCompleted: 29 },
+  { id: 'user-07', displayName: 'Juno Vale', avatarColor: 'from-emerald-500 to-teal-600', reputationScore: 7425, totalBountiesCompleted: 27 },
+  { id: 'user-08', displayName: 'Riven Atlas', avatarColor: 'from-violet-500 to-fuchsia-600', reputationScore: 7190, totalBountiesCompleted: 25 },
+  { id: 'user-09', displayName: 'Sage Rivera', avatarColor: 'from-blue-500 to-sky-600', reputationScore: 6950, totalBountiesCompleted: 24 },
+  { id: 'user-10', displayName: 'Echo Stone', avatarColor: 'from-lime-500 to-green-600', reputationScore: 6725, totalBountiesCompleted: 22 },
+  { id: 'user-11', displayName: 'Talia Brooks', avatarColor: 'from-red-500 to-pink-600', reputationScore: 6490, totalBountiesCompleted: 21 },
+  { id: 'user-12', displayName: 'Niko Frost', avatarColor: 'from-sky-400 to-cyan-600', reputationScore: 6215, totalBountiesCompleted: 20 },
+  { id: 'user-13', displayName: 'Vesper Moon', avatarColor: 'from-purple-400 to-indigo-700', reputationScore: 6040, totalBountiesCompleted: 19 },
+  { id: 'user-14', displayName: 'Rune Carter', avatarColor: 'from-stone-500 to-zinc-700', reputationScore: 5890, totalBountiesCompleted: 18 },
+  { id: 'user-15', displayName: 'Iris Hale', avatarColor: 'from-teal-400 to-emerald-700', reputationScore: 5710, totalBountiesCompleted: 18 },
+  { id: 'user-16', displayName: 'Cassian Reed', avatarColor: 'from-orange-400 to-red-600', reputationScore: 5565, totalBountiesCompleted: 17 },
+  { id: 'user-17', displayName: 'Zara Knox', avatarColor: 'from-fuchsia-400 to-purple-700', reputationScore: 5390, totalBountiesCompleted: 16 },
+  { id: 'user-18', displayName: 'Atlas Noor', avatarColor: 'from-blue-600 to-indigo-800', reputationScore: 5215, totalBountiesCompleted: 16 },
+  { id: 'user-19', displayName: 'Pax Wilder', avatarColor: 'from-lime-400 to-emerald-600', reputationScore: 5080, totalBountiesCompleted: 15 },
+  { id: 'user-20', displayName: 'Elio Park', avatarColor: 'from-amber-500 to-yellow-700', reputationScore: 4925, totalBountiesCompleted: 15 },
+  { id: 'user-21', displayName: 'Rhea Kim', avatarColor: 'from-rose-400 to-red-700', reputationScore: 4760, totalBountiesCompleted: 14 },
+  { id: 'user-22', displayName: 'Dax Mercer', avatarColor: 'from-cyan-600 to-teal-800', reputationScore: 4635, totalBountiesCompleted: 14 },
+  { id: 'user-23', displayName: 'Mina Fox', avatarColor: 'from-indigo-400 to-blue-700', reputationScore: 4510, totalBountiesCompleted: 13 },
+  { id: 'user-24', displayName: 'Theo Vale', avatarColor: 'from-violet-600 to-purple-800', reputationScore: 4385, totalBountiesCompleted: 13 },
+  { id: 'user-25', displayName: 'Luca Reyes', avatarColor: 'from-green-400 to-lime-700', reputationScore: 4260, totalBountiesCompleted: 12 },
+  { id: 'user-26', displayName: 'Nyx Arden', avatarColor: 'from-slate-500 to-slate-800', reputationScore: 4115, totalBountiesCompleted: 12 },
+  { id: 'user-27', displayName: 'Aria Wells', avatarColor: 'from-pink-400 to-fuchsia-700', reputationScore: 3980, totalBountiesCompleted: 11 },
+  { id: 'user-28', displayName: 'Kian Cross', avatarColor: 'from-yellow-500 to-amber-800', reputationScore: 3845, totalBountiesCompleted: 11 },
+  { id: 'user-29', displayName: 'Nia Blake', avatarColor: 'from-sky-500 to-blue-800', reputationScore: 3720, totalBountiesCompleted: 10 },
+  { id: 'user-30', displayName: 'Milo Hart', avatarColor: 'from-emerald-400 to-teal-700', reputationScore: 3595, totalBountiesCompleted: 10 },
+  { id: 'user-31', displayName: 'Sora Finch', avatarColor: 'from-purple-500 to-pink-700', reputationScore: 3470, totalBountiesCompleted: 9 },
+  { id: 'user-32', displayName: 'Leah Storm', avatarColor: 'from-red-400 to-orange-700', reputationScore: 3355, totalBountiesCompleted: 9 },
+  { id: 'user-33', displayName: 'Owen Ash', avatarColor: 'from-zinc-500 to-stone-800', reputationScore: 3240, totalBountiesCompleted: 8 },
+  { id: 'user-34', displayName: 'Vera Holt', avatarColor: 'from-blue-400 to-cyan-700', reputationScore: 3125, totalBountiesCompleted: 8 },
+  { id: 'user-35', displayName: 'Remy Cole', avatarColor: 'from-lime-500 to-green-800', reputationScore: 3010, totalBountiesCompleted: 8 },
+  { id: 'user-36', displayName: 'Ayla West', avatarColor: 'from-rose-500 to-pink-800', reputationScore: 2895, totalBountiesCompleted: 7 },
+  { id: 'user-37', displayName: 'Idris Lane', avatarColor: 'from-indigo-500 to-violet-800', reputationScore: 2780, totalBountiesCompleted: 7 },
+  { id: 'user-38', displayName: 'Lena Quinn', avatarColor: 'from-teal-500 to-cyan-800', reputationScore: 2665, totalBountiesCompleted: 7 },
+  { id: 'user-39', displayName: 'Cleo North', avatarColor: 'from-orange-500 to-amber-800', reputationScore: 2550, totalBountiesCompleted: 6 },
+  { id: 'user-40', displayName: 'Bryn Ellis', avatarColor: 'from-fuchsia-500 to-rose-800', reputationScore: 2435, totalBountiesCompleted: 6 },
+  { id: 'user-41', displayName: 'Ezra Pike', avatarColor: 'from-sky-600 to-indigo-800', reputationScore: 2320, totalBountiesCompleted: 6 },
+  { id: 'user-42', displayName: 'Tess Vale', avatarColor: 'from-green-500 to-emerald-800', reputationScore: 2205, totalBountiesCompleted: 5 },
+  { id: 'user-43', displayName: 'Finn Ro', avatarColor: 'from-yellow-600 to-orange-800', reputationScore: 2090, totalBountiesCompleted: 5 },
+  { id: 'user-44', displayName: 'Mae Orion', avatarColor: 'from-purple-600 to-indigo-900', reputationScore: 1975, totalBountiesCompleted: 5 },
+  { id: 'user-45', displayName: 'Hugo Ray', avatarColor: 'from-red-600 to-rose-900', reputationScore: 1860, totalBountiesCompleted: 4 },
+  { id: 'user-46', displayName: 'Gia Star', avatarColor: 'from-cyan-500 to-blue-900', reputationScore: 1745, totalBountiesCompleted: 4 },
+  { id: 'user-47', displayName: 'Noah Drift', avatarColor: 'from-stone-400 to-slate-700', reputationScore: 1630, totalBountiesCompleted: 4 },
+  { id: 'user-48', displayName: 'Skye Moss', avatarColor: 'from-lime-400 to-teal-700', reputationScore: 1515, totalBountiesCompleted: 3 },
+  { id: 'user-49', displayName: 'Rosa Beam', avatarColor: 'from-pink-500 to-purple-800', reputationScore: 1400, totalBountiesCompleted: 3 },
+  { id: 'user-50', displayName: 'Jett Rowan', avatarColor: 'from-slate-600 to-indigo-900', reputationScore: 1285, totalBountiesCompleted: 3 },
+]
+
+const podiumStyles = [
+  {
+    label: 'Gold',
+    icon: Trophy,
+    className: 'border-amber-400/60 bg-amber-500/10 shadow-[0_0_24px_rgba(251,191,36,0.18)]',
+    badgeClassName: 'bg-amber-400 text-slate-950',
+  },
+  {
+    label: 'Silver',
+    icon: Medal,
+    className: 'border-slate-300/60 bg-slate-300/10 shadow-[0_0_24px_rgba(203,213,225,0.14)]',
+    badgeClassName: 'bg-slate-300 text-slate-950',
+  },
+  {
+    label: 'Bronze',
+    icon: Award,
+    className: 'border-orange-700/70 bg-orange-700/10 shadow-[0_0_24px_rgba(194,65,12,0.16)]',
+    badgeClassName: 'bg-orange-700 text-white',
+  },
+]
+
+const sortOptions: { key: SortKey; label: string }[] = [
+  { key: 'reputationScore', label: 'Reputation Score' },
+  { key: 'totalBountiesCompleted', label: 'Total Bounties Completed' },
+]
+
+const formatNumber = new Intl.NumberFormat('en-US').format
+
+export function Leaderboard() {
+  const [sortKey, setSortKey] = useState<SortKey>('reputationScore')
+
+  const sortedUsers = useMemo(() => {
+    return [...leaderboardUsers]
+      .sort((a, b) => {
+        const primary = b[sortKey] - a[sortKey]
+        return primary !== 0 ? primary : b.reputationScore - a.reputationScore
+      })
+      .map((user, index) => ({ ...user, rank: index + 1 }))
+  }, [sortKey])
+
+  const visibleUsers = sortedUsers.slice(0, 10)
+
+  return (
+    <section className="rounded-2xl border border-slate-800/70 bg-slate-900/50 p-6 shadow-xl" aria-labelledby="guild-leaderboard-heading">
+      <div className="flex flex-col gap-4 md:flex-row md:items-start md:justify-between">
+        <div>
+          <p className="text-sm font-medium uppercase tracking-[0.2em] text-indigo-300">
+            Monthly reputation
+          </p>
+          <h2 id="guild-leaderboard-heading" className="mt-2 text-2xl font-bold text-white">
+            Guild Leaderboard
+          </h2>
+          <p className="mt-2 max-w-2xl text-sm text-slate-400">
+            Top contributors ranked from a 50-user mocked dataset. The top three receive distinct podium styling while ranks 4-10 use compact rows.
+          </p>
+        </div>
+
+        <div className="flex flex-wrap gap-2" aria-label="Leaderboard sorting options">
+          {sortOptions.map((option) => (
+            <button
+              key={option.key}
+              type="button"
+              onClick={() => setSortKey(option.key)}
+              className={cn(
+                'inline-flex items-center gap-2 rounded-full border px-3 py-2 text-sm font-medium transition-colors',
+                sortKey === option.key
+                  ? 'border-indigo-400 bg-indigo-500/20 text-indigo-100'
+                  : 'border-slate-700 bg-slate-950/40 text-slate-300 hover:border-indigo-500 hover:text-white'
+              )}
+              aria-pressed={sortKey === option.key}
+            >
+              <ArrowDownUp className="h-4 w-4" />
+              {option.label}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      <div className="mt-6 grid gap-3" role="list" aria-label="Top 10 monthly reputation leaders">
+        {visibleUsers.map((user) => {
+          const podiumStyle = podiumStyles[user.rank - 1]
+          const PodiumIcon = podiumStyle?.icon
+
+          return (
+            <motion.article
+              layout
+              initial={{ opacity: 0, y: 8 }}
+              animate={{ opacity: 1, y: 0 }}
+              transition={{ duration: 0.18 }}
+              key={user.id}
+              role="listitem"
+              className={cn(
+                'flex items-center gap-4 rounded-xl border border-slate-800/70 bg-slate-950/40 p-4 transition-colors',
+                user.rank <= 3 ? podiumStyle?.className : 'hover:border-slate-700'
+              )}
+            >
+              <div className={cn(
+                'flex h-10 w-10 shrink-0 items-center justify-center rounded-full text-sm font-bold',
+                user.rank <= 3 ? podiumStyle?.badgeClassName : 'bg-slate-800 text-slate-200'
+              )}>
+                #{user.rank}
+              </div>
+
+              <div className={cn('flex h-12 w-12 shrink-0 items-center justify-center rounded-full bg-gradient-to-br text-base font-bold text-white', user.avatarColor)} aria-hidden="true">
+                {user.displayName.split(' ').map((name) => name[0]).join('')}
+              </div>
+
+              <div className="min-w-0 flex-1">
+                <div className="flex flex-wrap items-center gap-2">
+                  <h3 className="truncate text-base font-semibold text-white">
+                    {user.displayName}
+                  </h3>
+                  {PodiumIcon && (
+                    <span className="inline-flex items-center gap-1 rounded-full bg-slate-950/50 px-2 py-1 text-xs font-medium text-slate-200">
+                      <PodiumIcon className="h-3.5 w-3.5" />
+                      {podiumStyle.label}
+                    </span>
+                  )}
+                </div>
+                <p className="mt-1 text-sm text-slate-400">
+                  {formatNumber(user.reputationScore)} reputation points
+                </p>
+              </div>
+
+              <div className="hidden text-right sm:block">
+                <p className="text-sm font-semibold text-white">
+                  {formatNumber(user.totalBountiesCompleted)}
+                </p>
+                <p className="text-xs uppercase tracking-wide text-slate-500">
+                  Bounties
+                </p>
+              </div>
+            </motion.article>
+          )
+        })}
+      </div>
+    </section>
+  )
+}