Windows
Hold Alt and type 366 on the numeric keypad.
Accents
Copy the character, or use the shortcut that matches your keyboard and app.
All U accentsHold Alt and type 366 on the numeric keypad.
Character Viewer → u ring
Type 016E then Alt + X
Insert → Special characters → U ring
Click the keycap, then paste with Ctrl+V or Cmd+V.
Num Lock on, hold Alt, type 366, release Alt.
Use the Unicode, HTML, CSS, or JS value below in documents and stylesheets.
U+016EŮŮ\016E\u{016E}Alt + 366