U17 or U-17 may refer to:
*
German submarine ''U-17'', one of several German submarines
* Cessna U-17, military model of
Cessna 185
*
FIFA U-17 World Cup
The FIFA U-17 World Cup, founded as the FIFA U-16 World Championship, later changed to U-17 in 1991 and to its current name in 2007, is the world championship of association football for male players under the age of 17 organized by ''Fédération ...
, football (soccer) championship for boys under 17 years
*
FIFA U-17 Women's World Cup, football (soccer) championship for girls under 17 years
* For the U17 Bandy World Championship for boys, see
Youth Bandy World Championship
The Bandy World Championship for youth teams is a group of sports tournaments held for bandy athletes competing for their junior national teams. There are four different age classes for boys and young men and one age class for girls. The tourna ...
* For the U17 Bandy World Championship for girls, see
Bandy World Championship G-17
The Bandy World Championship G-17, also designated ''Bandy World Championship F-17'', is a Youth Bandy World Championship for girls' teams up to the age of 17 years. This is the only Youth Bandy World Championship age group for female players. Usu ...
*
Nonconvex great rhombicuboctahedron
In geometry, the nonconvex great rhombicuboctahedron is a nonconvex uniform polyhedron, indexed as U17. It has 26 faces (8 triangles and 18 squares), 48 edges, and 24 vertices. It is represented by the Schläfli symbol rr and Coxeter-Dynkin dia ...
* A comic website in China, 'U17' has the similar pronunciation with the Chinese words 'With the scent of mythical creatures'.
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