diff --git a/src/components/UserList.tsx b/src/components/UserList.tsx
new file mode 100644
index 0000000..d09d561
--- /dev/null
+++ b/src/components/UserList.tsx
@@ -0,0 +1,54 @@
+import { ChevronDown } from "lucide-react";
+import UserListCard from "./UserListCard";
+import { useEffect, useState } from "react";
+import { useUserStore } from "../stores/userListStore";
+import { useLocation } from "react-router";
+
+export default function UserList() {
+	const [isOpen, setIsOpen] = useState(false);
+	const location = useLocation();
+	const { userList, fetchUsers } = useUserStore();
+
+	// 페이지 이동 시 자동으로 닫기
+	useEffect(() => {
+		setIsOpen(false);
+	}, [location.pathname]);
+
+	useEffect(() => {
+		fetchUsers();
+	}, [fetchUsers]);
+
+	/* 필요한 정보 */
+	/* 프로필 이미지, 이름, 소속, 학년(전공 과목), auth_id */
+	return (
+		<div className="absolute left-10 bottom-0 w-90 bg-white rounded-t-xl flex flex-col">
+			{/* 헤더 */}
+			<div
+				className="cursor-pointer flex flex-row justify-between items-center px-5 py-3 w-full bg-violet-500 rounded-t-xl"
+				onClick={() => setIsOpen(!isOpen)}
+			>
+				<h3 className="text-lg text-white font-bold">온라인 사용자</h3>
+				<ChevronDown
+					className={`text-white transition-transform duration-300 ${
+						isOpen ? "rotate-0" : "rotate-180"
+					}`}
+					size={28}
+					strokeWidth={3}
+				/>
+			</div>
+
+			{/* 슬라이딩 리스트 */}
+			<div
+				className={` transition-all duration-500 ease-in-out pb-4 ${
+					isOpen ? "h-160 overflow-y-auto" : "h-0 overflow-y-hidden"
+				}`}
+			>
+				<div className="flex flex-col">
+					{userList.map((user) => (
+						<UserListCard key={user.auth_id} user={user} />
+					))}
+				</div>
+			</div>
+		</div>
+	);
+}
diff --git a/src/components/UserListCard.tsx b/src/components/UserListCard.tsx
new file mode 100644
index 0000000..d894ff8
--- /dev/null
+++ b/src/components/UserListCard.tsx
@@ -0,0 +1,53 @@
+import { Link } from "react-router";
+import { getAge } from "../utils/getAge";
+import { getGrade } from "../utils/getGrade";
+
+export default function UserListCard({ user }: { user: User }) {
+	const age = user.birth_date ? getAge(user.birth_date) : 0;
+	const grade = user.role === "student" && getGrade(age);
+
+	const roleMap: Record<string, string> = {
+		student: "학생",
+		teacher: "선생님",
+		parent: "학부모",
+	};
+
+	return (
+		<>
+			<Link to={`/profile/${user.auth_id}`}>
+				<div className="flex flex-row justify-between items-center py-4 px-5 hover:bg-[#F1F3F5]">
+					{/* left */}
+					<div className="flex flex-row items-center gap-2.5">
+						{/* 이미지 */}
+						<div className="relative w-12 h-12 bg-amber-300 rounded-lg">
+							{/* 온라인 */}
+							<div className="absolute right-0 bottom-0 w-4 h-4 bg-green-500 rounded-full border-2 border-white"></div>
+							{/* 오프라인 */}
+							{/* <div className="absolute right-0 bottom-0 w-4 h-4 bg-gray-400 rounded-full border-2 border-white"></div> */}
+						</div>
+						{/* 정보 */}
+						<div className="flex flex-col gap-1 text-sm">
+							{/* 이름 */}
+							<div className="line-clamp-1">{user.nickname}</div>
+							{/* 소속, 학년 (선생님은 전공) */}
+							<div>
+								{roleMap[user.role] || "알 수 없음"}
+								{user.role === "student" && `, ${grade}`}{" "}
+								{user.role === "teacher" && `, ${user.major}`}
+							</div>
+						</div>
+					</div>
+					{/* right */}
+					<div className="space-x-2 text-xs">
+						<button className="cursor-pointer px-2 py-1 bg-violet-500 text-white rounded hover:bg-violet-600">
+							팔로우
+						</button>
+						<button className="cursor-pointer px-2 py-1 bg-gray-200 rounded hover:bg-gray-300">
+							메시지
+						</button>
+					</div>
+				</div>
+			</Link>
+		</>
+	);
+}
diff --git a/src/layouts/MainLayout.tsx b/src/layouts/MainLayout.tsx
index b2f57ed..fd89b18 100644
--- a/src/layouts/MainLayout.tsx
+++ b/src/layouts/MainLayout.tsx
@@ -1,6 +1,7 @@
 import { Outlet } from "react-router";
 import Header from "../components/layout/Header";
 import Footer from "../components/layout/Footer";
+import UserList from "../components/UserList";
 
 export default function MainLayout() {
 	return (
@@ -11,13 +12,15 @@ export default function MainLayout() {
 				<Header />
 
 				{/* 스크롤 영역 */}
-				<main className="overflow-y-auto bg-[#F3F4F6] flex flex-col items-center h-[calc(100vh-70px)]">
+				<main className="relative overflow-y-auto bg-[#F3F4F6] flex flex-col items-center h-[calc(100vh-70px)]">
 					<div className="min-h-[calc(100%)]">
 						<div className="min-h-[calc(100%-90px)] pt-10">
 							<Outlet />
 						</div>
 						<Footer />
 					</div>
+					{/* 유저 리스트 모달 */}
+					<UserList />
 				</main>
 			</div>
 		</>
diff --git a/src/stores/userListStore.ts b/src/stores/userListStore.ts
new file mode 100644
index 0000000..a13d42f
--- /dev/null
+++ b/src/stores/userListStore.ts
@@ -0,0 +1,28 @@
+import { create } from "zustand";
+import { immer } from "zustand/middleware/immer";
+import supabase from "../utils/supabase";
+
+type UserListState = {
+	userList: User[];
+	// fetchUsers: 전체 유저 리스트 가져오기
+	fetchUsers: () => Promise<void>;
+};
+
+export const useUserStore = create<UserListState>()(
+	immer((set) => ({
+		userList: [],
+		// 전체 유저 리스트 가져오기
+		fetchUsers: async () => {
+			try {
+				const { data, error } = await supabase
+					.from("users")
+					.select("*");
+				if (error) throw error;
+
+				set({ userList: data || [] });
+			} catch (err) {
+				console.error("유저 목록 로딩 오류:", err);
+			}
+		},
+	})),
+);
diff --git a/src/types/user.d.ts b/src/types/user.d.ts
new file mode 100644
index 0000000..e12050f
--- /dev/null
+++ b/src/types/user.d.ts
@@ -0,0 +1,8 @@
+type User = {
+	auth_id: string;
+	nickname: string;
+	online?: string;
+	role: string;
+	birth_date?: Date;
+	major?: string;
+};