Mario Bros. is a platform game published and developed for arcades by Nintendo in 1983. It was created by Shigeru Miyamoto. Italian-American plumber Mario and his brother Luigi exterminate creatures emerging from the sewers by flipping them on their backs and kicking them away. The original versions of Mario Bros.—the arcade version and the Family Computer/Nintendo Entertainment System (FC/NES) version—were received positively by critics.

Mario Bros. has been included as a mini-game in all of the Super Mario Advance series and numerous other games. Mario Bros. has been re-released for the Wii‘s, Nintendo 3DS‘s, and Wii U‘s Virtual Console services in Japan, North America, Europe, and Australia. It has also been re-released through Nintendo Switch Online.