Nina Hartley (Born March 11, 1959) is an erotic actress.

Born in Berkeley, California, Nina Hartley began making pornographic movies in 1984, and is still active as of this writing (2003). Hartley is one of the most recognizable and enduring performers in porn, having appeared in over 600 pornographic movies over the course of her 20 year career.

Like many other porn stars, Hartley has crossed over into mainstream Hollywood on occasion, most notably in Boogie Nights, where she played a porn star.