Room 4-1

Room 4-1 can refer to:
 * Room 4-1 in Mario vs. Donkey Kong 2: March of the Minis
 * Room 5-1 in Mario vs. Donkey Kong 2: March of the Minis, called "Room 4-1" in the PAL version
 * Room 4-1 in Mario vs. Donkey Kong: Minis March Again!