It's a gender icon, represented by two circles, interlocking. The one to the left is lower, with a cross, "addition sign" extending diagonally to the left downward. The circle that is higher and to the right has an arrow pointing upwards and to the right extending from its outer center. These represent male and female.
Related to Gender Icon
Related icons are the icons with matching tags, as well as all people icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors