Pancrase (パンクラス, Pankurasu) is a Japanese mixed martial arts (MMA) promotion company based in Tokyo. It was founded in 1993 by professional wrestlers Masakatsu Funaki and Minoru Suzuki.

The name was based on pankration, a fighting sport in the Ancient Olympic Games. Suzuki and Funaki practiced catch wrestling. They based the promotion and its rules on professional wrestling. The promotion's champions were called "King of Pancrase".

The rules allowed closed-fisted punches, except to the head, and palm strikes to the head. A wrestler must break a submission hold when the opponent reaches the ropes, but a wrestler who claims a rope break loses a point. A wrestler who claims a specified number of rope breaks (between 3 and 5) was disqualified. From 1998 to 2000, the promotion changed its rules to resemble other mixed martial arts promotions.