Daniel Gregg Santiago (born June 24, 1976) is an American-born Puerto Rican professional basketball player, currently playing at the center position for the Cangrejeros de Santurce. He has played in the NBA, NCAA, NAIA, and the National Superior Basketball League of Puerto Rico, and overseas in Italy, Spain, and Argentina. Santiago has also been a member of the Puerto Rican national team since 1998.