All Octicons
square-circle
Octicon sizes navigation
React
import {SquareCircleIcon} from '@primer/octicons-react' <SquareCircleIcon size={16} />
Rails
<%= render(Primer::Beta::Octicon.new(:"square-circle", size: :small)) %>
Jekyll
{% octicon square-circle height:16 %}
Figma
This icon is called square-circle
in Primer's Octicons library.