Lock Icon

Q: When should I use it instead of a similar icon?

Use it for private channels, boards and projects, marked beside the name in a sidebar list; locked status on invoices, closed periods or cells that can no longer be edited; and the secure payment note beside the pay button or the card fields at checkout. For a passcode screen that guards a note or app until the code is typed, use the Lock Dots icon. For a round marker on a feature card that waits on a plan upgrade, use the Lock Circle icon. For the Security tab of a workspace admin settings page, use the Shield icon.

Padlock with a round keyhole, for locked states, restricted access, privacy and secure checkout. Available in 4 styles (outline, solid, duotone and filled) as a React component you install with the shadcn CLI.

Preview

Lock icon in outline, solid, duotone and filled styles

16px
20px
24px
32px

Install and code

pnpm dlx shadcn@latest add @reui/icons/default/filled/lock

Writes reui/icons/default/filled/lock.tsx

Icon installs need ReUI Ultimate

Ultimate covers all 667 icons in 4 styles, 57 of them animated, with the CLI install, the source and the SVG of each.

Get Ultimate Sign in

Lock icon in shadcn/ui components

Button

Icon button

Button group

Badge

PrivatePrivatePrivate

Dropdown menu

Input group

Empty state

No private channels yet

Make a channel private to keep it to the members you invite.

Lock icon FAQ

What does this icon show?

Padlock with a round keyhole, for locked states, restricted access, privacy and secure checkout. Typical uses: locked account badge, restricted content marker and secure checkout indicator.

When should I use it instead of a similar icon?

Use it for:

Private channels, boards and projects, marked beside the name in a sidebar list
Locked status on invoices, closed periods or cells that can no longer be edited
The secure payment note beside the pay button or the card fields at checkout

For a passcode screen that guards a note or app until the code is typed, use the Lock Dots icon. For a round marker on a feature card that waits on a plan upgrade, use the Lock Circle icon. For the Security tab of a workspace admin settings page, use the Shield icon.

Which styles does it come in?

4 styles: Outline, Solid, Duotone and Filled. Every style is drawn on the same 24 by 24 grid and installs as its own file, so you can switch styles without touching the layout.

How do I install it with the shadcn CLI?

Copy the install command from the panel above, in the style you want, and run it in your project. The shadcn CLI adds the icon as a React component that you import and render like any other. It draws in the current text color, so your text color and size classes style it. Icon installs need a ReUI Ultimate license.

What icons go well with it?

Icons from the same family and the Security set: Lock Circle, Lock Dots, Eye, Eye Slash, Face ID and Fingerprint Scanning.

When was it added?

It joined the ReUI icon library on June 30, 2026.

For AI Agents

Hand your agent this brief or the ReUI MCP, not a screenshot. Installs with a ReUI Ultimate license.

When to use

Private channels, boards and projects, marked beside the name in a sidebar list
Locked status on invoices, closed periods or cells that can no longer be edited
The secure payment note beside the pay button or the card fields at checkout

When not to use

A passcode screen that guards a note or app until the code is typed: use the Lock Dots icon
A round marker on a feature card that waits on a plan upgrade: use the Lock Circle icon
The Security tab of a workspace admin settings page: use the Shield icon

Agent notes

Name an icon-only button with its label, "Make private", as the aria-label

Markdownhttps://reui.io/icons/preview/lock.md

MCPget_icon("lock")

Installnpx shadcn@latest add @reui/icons/default/duotone/lock

Full index for agents:llms.txtReUI MCP setup

Start building with ReUI Pro today.

Every Pro block, every style, and every future addition, with one license for unlimited projects.

Get All-Access

From $249, once. Lifetime updates.