Nicolas Dwynn Coster (December 3, 1933 – June 26, 2023) was an American actor, most known for his work in daytime drama and as a character actor with his role on series Santa Barbara and on nighttime television series, such as Wonder Woman, Buck Rogers in the 25th Century, T. J. Hooker, and Star Trek: The Next Generation.

Coster was in Twigs with Sada Thompson, Seesaw with Michele Lee, Otherwise Engaged with Tom Courtenay,[4] and The Little Foxes with Elizabeth Taylor, which was staged on Broadway and the Victoria Theatre in London.

Coster created the role of Robert Delaney on Somerset in March 1970 and later moved to Another World playing the same character.

He played gangster-turned-informant Anthony Makana on One Life to Live, but left that series to create the role of Lionel Lockridge on Santa Barbara.

He played kidnapper Steve Andrews on the ABC soap opera All My Children and returned to Another World for its 25th anniversary in 1989.