U15 or U-15 may refer to:

Submarines

* , various vessels * * , a submarine of the Austro-Hungarian Navy

University associations

* U15 (German universities), a university association in Germany *

U15 Group of Canadian Research Universities U15 Canada (U15 Group of Canadian Research Universities, ; commonly shortened to U15 Canada) is an association of 15 Canadian public research universities. It is headquartered in Ottawa and was established in 1991 to represent its members' interes ...

Other uses

U15 (Berlin U-Bahn) The U15 was a line on the Berlin U-Bahn The Berlin U-Bahn (; short for , "underground railway") is a rapid transit system in Berlin, the capital and largest city of Germany, and a major part of the city's public transport system. Together wi ...

, a transit line *

Cubohemioctahedron In geometry, the cubohemioctahedron is a nonconvex uniform polyhedron, indexed as U15. It has 10 faces (6 squares and 4 regular hexagons), 24 edges and 12 vertices. Its vertex figure is a crossed quadrilateral. It is given Wythoff symbol 4 , ...

Small nucleolar RNA SNORD15 Small means of insignificant size. Small may also refer to: Science and technology * SMALL, an ALGOL-like programming language * ''Small'' (journal), a nano-science publication * <small>, an HTML element that defines smaller text Arts and ...

* Uppland Runic Inscription 15 {{Letter-NumberCombDisambig