U21

U21 or U-21 may refer to:

Naval vessels , various vessels , a sloop of the Indian Navy , a submarine of the Austro-Hungarian Navy

Other uses Beechcraft U-21 Ute, an American utility aircraft Great rhombihexahedron Small nucleolar RNA SNORD21 Universitas 21, an international network of research-intensive universities Uppland Runic Inscription 21

See also