Mario Tennis, known in Japan as Mario Tennis 64 (マリオテニス64, Mario Tenisu Rokujūyon?), is a 2000 sports video game developed by Camelot and Nintendo for the Nintendo 64 video game console. The game was released in North America and Japan in the summer of 2000, and released in Europe later in November. It is the first tennis-based game starring Mario since Mario's Tennis, and the second game developed by Camelot on a Nintendo system. The game is known for being the introduction of Waluigi, and the re-introduction of Princess Daisy, and Birdo.
The success of Mario Tennis led to a sequel: Mario Power Tennis, in 2004.
Mario Tennis was later re-released on the Virtual Console in the PAL region on June 18, 2010, in North America on June 28, 2010 and in Japan on August 31, 2010.
The Mario Tennis series continues with Mario Tennis Open on the Nintendo 3DS.