Tennis is a sports video game developed by Nintendo in 1983, and released for the Family Computer (Famicom) in 1984. The arcade game version Vs. Tennis was also released for the Nintendo VS. System in 1984, becoming a hit at Japanese and American arcades that year; it was the sixth top-performing arcade game of 1984 in the United States. Tennis is one of 17 launch games for the Nintendo Entertainment System (NES) in North America and Europe. The game was re-released for the Game Boy as a launch game in North America.

The game features single-player and two-player modes for singles and doubles matches, with either competitive or cooperative gameplay. A computerized opponent's artificial intelligence can be set to one of five difficulty levels. Mario is the referee.