Kasou Taishou (欽ちゃん＆香取慎吾の全日本仮装大賞, Kinchan ando Katori Shingo no Zen Nihon Kasō Taishō, All Japan Kasoh Grand Prix, internationally known as Masquerade) is a semi-annual Japanese television variety show that is run on Nippon TV and first aired in 1979.

The program shows in which various amateur groups (or solo artists) perform short skits, which are rated by a panel of judges. Especially in recent years, many of the skits have revolved around clever methods of "faking" cinematic special effects on a live stage. The show is hosted by Kinichi Hagimoto and Shingo Katori. Worldwide, the most famous of these skits, and among the most successful at "fake special effects" was a skit which is widely known as "Matrix ping pong".

On the 98th edition (February 6, 2021) of the program, Kinichi Hagimoto announced that this would be the last time that he will present the program.