Daniel B. Christison (born April 26 , 1972) is an American mixed martial artist. He is currently fighting for the San Jose Razorclaws of the International Fight League.

At 6'8" and 270 lbs, Christison is a heavyweight who fights chiefly with a submission wrestling style. Christison fights out of Albuquerque, New Mexico. Christison was a contestant on the second season of The Ultimate Fighter. Nicknamed "Big" Dan Christison and Dan "The Sandman" Christison, he lost his first fight on the show, a quarterfinals match with Seth Petruzelli.

Christison has an MMA record of 8 wins, 6 losses, and 0 draws, with some of his losses coming to the biggest names in MMA such as Dan Severn and Frank Mir. Christison has thus far proven difficult to submit or knock out. With the exception of his loss to Eric Pele, all of Christison's losses have been by decision.

Christison was member of Team Hughes on TUF 2. Along with fellow former Ultimate Fighter competitors Diego Sanchez and Rashad Evans, he now trains in Albuquerque under the instruction of submission fighter Greg Jackson.