diff --git a/adminfront/src/components/layout/AppLayout.tsx b/adminfront/src/components/layout/AppLayout.tsx
index 6ba74cb6..929a0846 100644
--- a/adminfront/src/components/layout/AppLayout.tsx
+++ b/adminfront/src/components/layout/AppLayout.tsx
@@ -827,7 +827,7 @@ function AppLayout() {
           </div>
         </header>
         <main className={shellLayoutClasses.mainMinWidth}>
-          <Outlet />
+          <Outlet context={isSidebarCollapsed} />
         </main>
       </div>
     </div>
diff --git a/adminfront/src/features/tenants/routes/TenantListPage.tsx b/adminfront/src/features/tenants/routes/TenantListPage.tsx
index d49d7443..8f9900fe 100644
--- a/adminfront/src/features/tenants/routes/TenantListPage.tsx
+++ b/adminfront/src/features/tenants/routes/TenantListPage.tsx
@@ -20,7 +20,7 @@ import {
   Upload,
 } from "lucide-react";
 import * as React from "react";
-import { Link, useNavigate } from "react-router-dom";
+import { Link, useNavigate, useOutletContext } from "react-router-dom";
 import { PageHeader } from "../../../../../common/core/components/page";
 import {
   type SortConfig,
@@ -36,6 +36,7 @@ import { Button } from "../../../components/ui/button";
 import {
   Card,
   CardContent,
+  CardDescription,
   CardHeader,
   CardTitle,
 } from "../../../components/ui/card";
@@ -117,6 +118,10 @@ const tenantCSVTemplate =
 const tenantPageSize = 500;
 const _tenantVirtualizationThreshold = 250;
 const _tenantEstimatedRowHeight = 73;
+const tenantTableHeadClassName =
+  "h-9 px-3 py-1 text-xs leading-tight align-middle whitespace-nowrap";
+const tenantTableHeadInteractiveClassName = `${tenantTableHeadClassName} cursor-pointer transition-colors hover:bg-muted/50`;
+const tenantTableHeadContentClassName = "flex h-full items-center gap-1";
 const _tenantLoadAheadPx = 360;
 const _tenantLoadAheadRows = 30;
 
@@ -139,6 +144,25 @@ function getTenantTypeLabel(type?: string) {
   return t(`domain.tenant_type.${type.toLowerCase()}`, type);
 }
 
+function splitTenantTypeLabel(label: string) {
+  const match = label.match(/^(.*?)\s*(\(.+\))$/);
+  if (!match) {
+    return { primary: label, secondary: null as string | null };
+  }
+  return {
+    primary: match[1].trim(),
+    secondary: match[2].trim(),
+  };
+}
+
+function abbreviateUuid(value: string) {
+  const parts = value.split("-");
+  if (parts.length < 4) {
+    return value;
+  }
+  return `${parts.slice(0, 4).join("-")}-...`;
+}
+
 function getTenantTypeTextClass(type?: string) {
   switch (type?.toUpperCase()) {
     case "COMPANY_GROUP":
@@ -932,6 +956,17 @@ function TenantListPage() {
               <CardTitle className="text-lg font-bold flex items-center gap-2">
                 {t("ui.admin.tenants.registry.title", "Tenant Registry")}
               </CardTitle>
+              <CardDescription>
+                {t(
+                  "msg.admin.tenants.registry.count",
+                  "총 {{count}}개의 테넌트가 등록되어 있습니다.",
+                  {
+                    count: scopeTenantId
+                      ? scopedTenants.length
+                      : allTenants.length,
+                  },
+                )}
+              </CardDescription>
             </div>
           </div>
         </CardHeader>
@@ -1552,10 +1587,19 @@ const TenantHierarchyView: React.FC<{
   isLoading,
 }) => {
   const parentRef = React.useRef<HTMLDivElement>(null);
+  const isSidebarCollapsed = useOutletContext<boolean>() ?? false;
   const isTest =
     (typeof process !== "undefined" && process.env.NODE_ENV === "test") ||
     (typeof window !== "undefined" &&
       (window as Window & { _IS_TEST_MODE?: boolean })._IS_TEST_MODE);
+  const tenantTableGridTemplateColumns = React.useMemo(
+    () =>
+      isSidebarCollapsed
+        ? "48px minmax(380px, 1fr) 310px 140px 240px 120px 120px 110px"
+        : "48px minmax(500px, 1fr) 240px 130px 226px 100px 100px 110px",
+    [isSidebarCollapsed],
+  );
+  const tenantTableMinWidth = "100%";
 
   const { subTree } = React.useMemo(
     () => buildTenantFullTree(tenants, scopeTenantId || undefined, !!search),
@@ -1660,6 +1704,7 @@ const TenantHierarchyView: React.FC<{
   });
 
   const virtualRows = rowVirtualizer.getVirtualItems();
+  const shouldVirtualizeRows = !(isTest && flattenedRows.length < 100);
 
   React.useEffect(() => {
     if (isTest) return;
@@ -1730,8 +1775,19 @@ const TenantHierarchyView: React.FC<{
         )}
         style={
           virtualRow
-            ? { transform: `translateY(${virtualRow.start}px)` }
-            : undefined
+            ? {
+                display: "grid",
+                gridTemplateColumns: tenantTableGridTemplateColumns,
+                minWidth: tenantTableMinWidth,
+                position: "absolute",
+                transform: `translateY(${virtualRow.start}px)`,
+                width: "100%",
+              }
+            : {
+                display: "grid",
+                gridTemplateColumns: tenantTableGridTemplateColumns,
+                minWidth: tenantTableMinWidth,
+              }
         }
       >
         <TableCell className="text-center px-4">
@@ -1810,25 +1866,39 @@ const TenantHierarchyView: React.FC<{
           </div>
         </TableCell>
         <TableCell
-          className="whitespace-nowrap"
+          className="whitespace-nowrap overflow-hidden pl-5"
           data-testid={`tenant-internal-id-${node.id}`}
         >
-          <code className="inline-block rounded-md bg-secondary/60 px-2 py-1 font-mono text-xs text-muted-foreground">
-            {node.id}
+          <code className="inline-block max-w-full overflow-hidden rounded-md bg-secondary/60 px-2 py-1 font-mono text-xs text-muted-foreground text-ellipsis">
+            {abbreviateUuid(node.id)}
           </code>
         </TableCell>
-        <TableCell className="whitespace-nowrap">
-          <span
-            className={cn(
-              "text-xs font-medium uppercase tracking-[0.04em]",
-              getTenantTypeTextClass(node.type),
-            )}
-          >
-            {getTenantTypeLabel(node.type)}
-          </span>
+        <TableCell className="whitespace-nowrap overflow-visible">
+          {(() => {
+            const { primary, secondary } = splitTenantTypeLabel(
+              getTenantTypeLabel(node.type),
+            );
+            return (
+              <div className="flex min-w-0 flex-col leading-tight">
+                <span
+                  className={cn(
+                    "block max-w-full text-xs font-medium uppercase tracking-[0.04em]",
+                    getTenantTypeTextClass(node.type),
+                  )}
+                >
+                  {primary}
+                </span>
+                {secondary ? (
+                  <span className="mt-0.5 block max-w-none whitespace-nowrap text-[11px] text-muted-foreground">
+                    {secondary}
+                  </span>
+                ) : null}
+              </div>
+            );
+          })()}
         </TableCell>
-        <TableCell className="whitespace-nowrap">
-          <code className="inline-flex max-w-full items-center rounded-md bg-secondary/60 px-2 py-1 font-mono text-xs text-muted-foreground">
+        <TableCell className="whitespace-nowrap overflow-hidden">
+          <code className="inline-flex max-w-full items-center overflow-hidden rounded-md bg-secondary/60 px-2 py-1 font-mono text-xs text-muted-foreground text-ellipsis">
             {node.slug}
           </code>
         </TableCell>
@@ -1847,7 +1917,7 @@ const TenantHierarchyView: React.FC<{
               : t("ui.common.status.inactive", "비활성")}
           </Badge>
         </TableCell>
-        <TableCell className="whitespace-nowrap">
+        <TableCell className="whitespace-nowrap pl-3">
           <div className="flex flex-col leading-tight">
             <span className="font-medium">
               {t("ui.admin.tenants.table.members_count", "{{count}}명", {
@@ -1859,9 +1929,9 @@ const TenantHierarchyView: React.FC<{
             </span>
           </div>
         </TableCell>
-        <TableCell className="whitespace-nowrap">
+        <TableCell className="whitespace-nowrap text-right pl-1">
           {node.updatedAt ? (
-            <div className="flex flex-col leading-tight">
+            <div className="flex flex-col items-end leading-tight">
               <span className="text-xs">
                 {new Date(node.updatedAt).toLocaleDateString("ko-KR")}
               </span>
@@ -1878,110 +1948,136 @@ const TenantHierarchyView: React.FC<{
   };
 
   return (
-    <div className="mt-4 flex flex-1 flex-col overflow-hidden rounded-md border">
+    <div className="flex flex-1 flex-col overflow-hidden rounded-md border">
       <div
         ref={parentRef}
         className="custom-scrollbar relative flex-1 overflow-auto"
         data-testid="tenant-table-container"
       >
-        <Table className="relative min-w-[1180px] border-separate border-spacing-0">
+        <Table
+          className="relative border-separate border-spacing-0"
+          style={{ display: "grid", minWidth: tenantTableMinWidth }}
+        >
           <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
-            <TableRow>
-              <TableHead className="w-[48px] whitespace-nowrap px-4 text-center">
-                <Checkbox
-                  checked={
-                    deletableTenants.length > 0 &&
-                    visibleSelectedCount === deletableTenants.length
-                  }
-                  onCheckedChange={(checked) => onSelectAll(!!checked)}
-                />
+            <TableRow
+              style={{
+                display: "grid",
+                gridTemplateColumns: tenantTableGridTemplateColumns,
+                minWidth: tenantTableMinWidth,
+              }}
+            >
+              <TableHead
+                className={`${tenantTableHeadClassName} w-[48px] text-center`}
+              >
+                <div className="flex h-full items-center justify-center">
+                  <Checkbox
+                    checked={
+                      deletableTenants.length > 0 &&
+                      visibleSelectedCount === deletableTenants.length
+                    }
+                    onCheckedChange={(checked) => onSelectAll(!!checked)}
+                  />
+                </div>
               </TableHead>
               <TableHead
-                className="min-w-[280px] cursor-pointer whitespace-nowrap transition-colors hover:bg-muted/50"
+                className={`${tenantTableHeadInteractiveClassName} min-w-[500px]`}
                 onClick={() => requestSort("name")}
               >
-                <div className="flex items-center">
+                <div className={tenantTableHeadContentClassName}>
                   {t("ui.admin.tenants.table.name", "NAME")}
                   {getSortIcon("name")}
                 </div>
               </TableHead>
               <TableHead
-                className="min-w-[220px] cursor-pointer whitespace-nowrap transition-colors hover:bg-muted/50"
+                className={`${tenantTableHeadInteractiveClassName} min-w-[220px] pl-5`}
                 onClick={() => requestSort("id")}
               >
-                <div className="flex items-center">
+                <div className={tenantTableHeadContentClassName}>
                   {t("ui.admin.tenants.table.id", "ID")}
                   {getSortIcon("id")}
                 </div>
               </TableHead>
               <TableHead
-                className="cursor-pointer whitespace-nowrap transition-colors hover:bg-muted/50"
+                className={`${tenantTableHeadInteractiveClassName} pl-5`}
                 onClick={() => requestSort("type")}
               >
-                <div className="flex items-center">
+                <div className={tenantTableHeadContentClassName}>
                   {t("ui.admin.tenants.table.type", "TYPE")}
                   {getSortIcon("type")}
                 </div>
               </TableHead>
               <TableHead
-                className="cursor-pointer whitespace-nowrap transition-colors hover:bg-muted/50"
+                className={`${tenantTableHeadInteractiveClassName} pl-5`}
                 onClick={() => requestSort("slug")}
               >
-                <div className="flex items-center">
+                <div className={tenantTableHeadContentClassName}>
                   {t("ui.admin.tenants.table.slug", "SLUG")}
                   {getSortIcon("slug")}
                 </div>
               </TableHead>
               <TableHead
-                className="cursor-pointer whitespace-nowrap transition-colors hover:bg-muted/50"
+                className={`${tenantTableHeadInteractiveClassName} pl-5`}
                 onClick={() => requestSort("status")}
               >
-                <div className="flex items-center">
+                <div className={tenantTableHeadContentClassName}>
                   {t("ui.admin.tenants.table.status", "STATUS")}
                   {getSortIcon("status")}
                 </div>
               </TableHead>
               <TableHead
-                className="cursor-pointer whitespace-nowrap transition-colors hover:bg-muted/50"
+                className={tenantTableHeadInteractiveClassName}
                 onClick={() => requestSort("recursiveMemberCount")}
               >
-                <div className="flex items-center">
+                <div className={tenantTableHeadContentClassName}>
                   {t("ui.admin.tenants.table.members", "MEMBERS")}
                   {getSortIcon("recursiveMemberCount")}
                 </div>
               </TableHead>
               <TableHead
-                className="cursor-pointer whitespace-nowrap transition-colors hover:bg-muted/50"
+                className={tenantTableHeadInteractiveClassName}
                 onClick={() => requestSort("updatedAt")}
               >
-                <div className="flex items-center">
+                <div
+                  className={`${tenantTableHeadContentClassName} justify-end`}
+                >
                   {t("ui.admin.tenants.table.updated", "UPDATED")}
                   {getSortIcon("updatedAt")}
                 </div>
               </TableHead>
             </TableRow>
           </TableHeader>
-          <TableBody className="relative">
-            {rowVirtualizer.getTotalSize() > 0 &&
-              virtualRows.length > 0 &&
-              !(isTest && flattenedRows.length < 100) && (
-                <tr style={{ height: `${virtualRows[0].start}px` }}>
-                  <td colSpan={8} />
-                </tr>
-              )}
-
+          <TableBody
+            className="relative"
+            style={
+              shouldVirtualizeRows
+                ? {
+                    display: "grid",
+                    height: `${rowVirtualizer.getTotalSize()}px`,
+                    minWidth: tenantTableMinWidth,
+                    position: "relative",
+                  }
+                : undefined
+            }
+          >
             {flattenedRows.length === 0 && !isLoading && (
-              <TableRow>
+              <TableRow
+                style={{
+                  display: "grid",
+                  gridTemplateColumns: tenantTableGridTemplateColumns,
+                  minWidth: tenantTableMinWidth,
+                }}
+              >
                 <TableCell
                   colSpan={8}
                   className="py-8 text-center text-muted-foreground"
+                  style={{ gridColumn: "1 / -1" }}
                 >
                   {emptyMessage}
                 </TableCell>
               </TableRow>
             )}
 
-            {isTest && flattenedRows.length < 100
+            {!shouldVirtualizeRows
               ? flattenedRows.map((row, index) => renderRow(row, index))
               : virtualRows.map((virtualRow) =>
                   renderRow(
@@ -1991,20 +2087,14 @@ const TenantHierarchyView: React.FC<{
                   ),
                 )}
 
-            {rowVirtualizer.getTotalSize() > 0 &&
-              virtualRows.length > 0 &&
-              !(isTest && flattenedRows.length < 100) && (
-                <tr
-                  style={{
-                    height: `${rowVirtualizer.getTotalSize() - virtualRows[virtualRows.length - 1].end}px`,
-                  }}
-                >
-                  <td colSpan={8} />
-                </tr>
-              )}
-
             {isFetchingNextPage && (
-              <TableRow>
+              <TableRow
+                style={{
+                  display: "grid",
+                  gridTemplateColumns: tenantTableGridTemplateColumns,
+                  minWidth: tenantTableMinWidth,
+                }}
+              >
                 <TableCell colSpan={8} className="py-4 text-center">
                   <div className="flex items-center justify-center gap-2 text-sm text-muted-foreground">
                     <RefreshCw size={16} className="animate-spin" />