Karlos Montez Dansby (born November 3, 1981 in Birmingham, Alabama) is an American football linebacker for the Miami Dolphins of the National Football League. He was drafted by the Arizona Cardinals in the second round of the 2004 NFL Draft. He played college football at Auburn.

On March 5, 2010, Dansby signed with the Miami Dolphins to a five-year, $43 million contract with $22 million guaranteed, which made it the richest contract for an inside linebacker in NFL history until Patrick Willis signed a five-year, $50 million contract.