diff --git a/lib/towerops/accounts/user.ex b/lib/towerops/accounts/user.ex
index 48ebb04e..7cb71011 100644
--- a/lib/towerops/accounts/user.ex
+++ b/lib/towerops/accounts/user.ex
@@ -33,6 +33,7 @@ defmodule Towerops.Accounts.User do
     field :privacy_policy_consent, :boolean, virtual: true
     field :terms_of_service_consent, :boolean, virtual: true
     field :password_breach_count, :integer, virtual: true
+    field :device_count, :integer, virtual: true
     field :last_sudo_at, :utc_datetime
 
     has_many :memberships, Membership
diff --git a/lib/towerops/admin.ex b/lib/towerops/admin.ex
index 42b6d5aa..e1e61703 100644
--- a/lib/towerops/admin.ex
+++ b/lib/towerops/admin.ex
@@ -14,7 +14,7 @@ defmodule Towerops.Admin do
   ## User Management
 
   @doc """
-  Lists all users in the system with their organizations.
+  Lists all users in the system with their organizations and device counts.
 
   ## Options
 
@@ -34,7 +34,17 @@ defmodule Towerops.Admin do
     limit = Keyword.get(opts, :limit, 100)
     offset = Keyword.get(opts, :offset, 0)
 
+    # Subquery to count devices across all user's organizations
+    device_count_query =
+      from d in "devices",
+        join: m in "organization_memberships",
+        on: d.organization_id == m.organization_id,
+        where: m.user_id == parent_as(:user).id,
+        select: count(d.id)
+
     User
+    |> from(as: :user)
+    |> select_merge([u], %{device_count: subquery(device_count_query)})
     |> order_by([u], desc: u.inserted_at)
     |> limit(^limit)
     |> offset(^offset)
diff --git a/lib/towerops_web/live/admin/user_live/index.html.heex b/lib/towerops_web/live/admin/user_live/index.html.heex
index 79d290f8..0235d1f4 100644
--- a/lib/towerops_web/live/admin/user_live/index.html.heex
+++ b/lib/towerops_web/live/admin/user_live/index.html.heex
@@ -10,6 +10,7 @@
         <:col :let={user} label="Email">{user.email}</:col>
         <:col :let={user} label="Superuser">{if user.is_superuser, do: "Yes", else: "No"}</:col>
         <:col :let={user} label="Organizations">{length(user.organizations)}</:col>
+        <:col :let={user} label="Devices">{user.device_count || 0}</:col>
         <:col :let={user} label="Joined">
           {ToweropsWeb.TimeHelpers.format_date(user.inserted_at, @timezone)}
         </:col>
diff --git a/test/towerops_web/live/admin/user_live_test.exs b/test/towerops_web/live/admin/user_live_test.exs
new file mode 100644
index 00000000..a57aa010
--- /dev/null
+++ b/test/towerops_web/live/admin/user_live_test.exs
@@ -0,0 +1,101 @@
+defmodule ToweropsWeb.Admin.UserLiveTest do
+  use ToweropsWeb.ConnCase
+
+  import Phoenix.LiveViewTest
+  import Towerops.AccountsFixtures
+  import Towerops.DevicesFixtures
+  import Towerops.OrganizationsFixtures
+
+  describe "Index" do
+    setup do
+      superuser =
+        user_fixture()
+        |> Ecto.Changeset.change(%{is_superuser: true})
+        |> Towerops.Repo.update!()
+
+      %{superuser: superuser}
+    end
+
+    test "displays device count for users", %{conn: conn, superuser: superuser} do
+      # Create a regular user
+      user = user_fixture()
+
+      # Create organizations with user as owner
+      org1 = organization_fixture(user.id)
+      org2 = organization_fixture(user.id)
+
+      # Create devices in different organizations (device_fixture auto-creates sites)
+      device_fixture(%{organization_id: org1.id})
+      device_fixture(%{organization_id: org1.id})
+      device_fixture(%{organization_id: org2.id})
+
+      # Log in as superuser
+      conn = log_in_user(conn, superuser)
+
+      # Visit the admin users page
+      {:ok, view, html} = live(conn, ~p"/admin/users")
+
+      # Check that the device count column header is displayed
+      assert html =~ "Devices"
+
+      # Verify device count is in the assigns
+      users = :sys.get_state(view.pid).socket.assigns.users
+      test_user = Enum.find(users, &(&1.id == user.id))
+      assert test_user.device_count == 3
+    end
+
+    test "displays 0 devices for users with no organizations", %{conn: conn, superuser: superuser} do
+      # Create a user with no organizations
+      user = user_fixture()
+
+      # Log in as superuser
+      conn = log_in_user(conn, superuser)
+
+      # Visit the admin users page
+      {:ok, view, html} = live(conn, ~p"/admin/users")
+
+      # Check that the device count column header is displayed
+      assert html =~ "Devices"
+
+      # Verify device count is 0 in the assigns
+      users = :sys.get_state(view.pid).socket.assigns.users
+      test_user = Enum.find(users, &(&1.id == user.id))
+      assert test_user.device_count == 0
+    end
+
+    test "device count only includes devices from user's organizations", %{
+      conn: conn,
+      superuser: superuser
+    } do
+      # Create two users
+      user1 = user_fixture()
+      user2 = user_fixture()
+
+      # Create organizations (user1 belongs to org1, user2 to org2)
+      org1 = organization_fixture(user1.id)
+      org2 = organization_fixture(user2.id)
+
+      # Create devices (user1 should only see devices from org1)
+      device_fixture(%{organization_id: org1.id})
+      device_fixture(%{organization_id: org1.id})
+      device_fixture(%{organization_id: org2.id})
+
+      # Log in as superuser
+      conn = log_in_user(conn, superuser)
+
+      # Visit the admin users page
+      {:ok, view, _html} = live(conn, ~p"/admin/users")
+
+      # Get all users from the assigns
+      users = :sys.get_state(view.pid).socket.assigns.users
+
+      # Find user1 and verify device count
+      user1_with_count = Enum.find(users, &(&1.id == user1.id))
+      assert user1_with_count.device_count == 2
+
+      # Find user2 and verify device count
+      user2_with_count = Enum.find(users, &(&1.id == user2.id))
+      assert user2_with_count.device_count == 1
+    end
+  end
+end