U46
U46, U 46 or U-46 may refer to:

 Elgin Area School District U46, in Elgin, Illinois
 , various vessels
 , a sloop of the Royal Indian Navy
 Small nucleolar RNA SNORD46
 Snub icosidodecadodecahedron
 Uppland Runic Inscription 46
 U46, a line of the Dortmund Stadtbahn