Closed U is a letter of the Latin script. It has a form of the letter U closed above with a horizontal bar.

Usage Gavino Pacheco Zegarra used a closed U in his phonetic alphabet for writing the Quechua family of languages in the French translation of Ollantay published in 1878. It is also used in the Landsmålsalfabetet.

The Unifon alphabet uses a capital form of closed U.

Computing codes This letter has not yet been encoded in Unicode, but resembles a closed U.

References