Mark Pulemau Tuinei (March 31, 1960 – May 6, 1999) was an American football offensive tackle in the National Football League (NFL) for the Dallas Cowboys. Known as a "gentle giant", his career lasted for 15 years (1983–1997) and his ability to protect quarterback Troy Aikman and to run-block for running back Emmitt Smith helped them win Super Bowls in 1992, 1993, and 1995 and the NFC East Division in 1985 and 1992-96. He was also selected for the Pro Bowl in 1994 and 1995.