World 4-5

World 4-5 may refer to the following:
 * World 4-5 (Super Mario Bros. 3)
 * Chomp Rock Zone, World 4-5 in Super Mario World 2: Yoshi's Island.
 * Friend or Foe?, World 4-5 in Yoshi's Island DS.
 * World 4-5 (New Super Mario Bros.)
 * World 4-5 (New Super Mario Bros. Wii)
 * World 4-5 (Super Mario 3D Land)
 * World 4-5 (New Super Mario Bros. 2)
 * Icicle Caverns, World 4-5 in New Super Mario Bros. U.
 * Ice Slide Expressway, World 4-5 in New Super Luigi U.