Hartman has appeared in various films and TV shows, including Flicka: Country Pride, Back to You and Me, and The Masked Singer.

[3][4] Hartman's breakthrough as an actress came in 1982 when she began appearing on the prime time drama Knots Landing, playing rock singer Ciji Dunne.

As a solution, Hartman was brought back on the show as Cathy Geary, also a singer, who later marries an unbalanced televangelist played by a young Alec Baldwin.

It reached Number 1 on the Billboard Hot Country Singles & Tracks charts on December 18, 1999, and was nominated for a Grammy Award.

In April 2011, her albums Lisa Hartman, Hold On and Letterock were released on CD with bonus tracks by Wounded Bird Records under license from Sony.

In May 2012, Hartman starred in Flicka: Country Pride, a movie from Twentieth Century Fox Home Entertainment.

In 2020, she and husband Clint Black appeared in season four of The Masked Singer as "Snow Owls", notably competing as the series' first duet competitors while riding in an egg-shaped vehicle.