Sullivan Walker (November 20, 1946 – February 20, 2012) was a Trinidad and Tobago actor who played numerous small and recurring roles on television shows from 1980 until 2005.

His most significant role was in the 1994–95 show Earth 2, where he appeared in nearly every episode as Yale, a cybernetic advisor to Devon Adair (Debrah Farentino) and tutor to her son, Uly.

Outside of film and television Walker was also a Broadway actor, acting in August Wilson's Two Trains Running.

[2] Toward the end of his life, he endeavored to found a school/workshops for Caribbean actors in New York to succeed in the American film and television markets.

[2] Walker died of a heart attack on February 20, 2012, in his home in Los Angeles, California, three months after his 65th birthday.