Strikeforce was an American mixed martial arts and kickboxing organization based in San Jose, California which operated from 1985 to 2013. It was headed by CEO Scott Coker.
Its live events and competitions have been shown on CBS, debuting on November 7, 2009, and Showtime in the United States. Internationally, Strikeforce events have been broadcast Super Channel in Canada, Primetime in the United Kingdom, SKY PerfecTV! in Japan, HBO Plus in Brazil, Space in Latin America and the Caribbean, and on the American Forces Network.
In early 2011, Strikeforce was purchased by American Ultimate Fighting Championship owner Zuffa LLC, which eventually closed the promotion and brought the remaining fighter contracts into the UFC roster.