Quinn Cummings is born in Los Angeles, California.

Begins appearing in commercials and minor television roles, laying the foundation for her acting career. Details about specific early commercial work are scarce but essential to building her experience.

Appears in 'The Bob Newhart Show', marking one of her early recognizable roles in a popular television series. This appearance was crucial in exposing her to a wider audience.

Wins critical acclaim for her role as Lucy McFadden in 'The Goodbye Girl', starring alongside Richard Dreyfuss and Marsha Mason. She receives an Academy Award nomination for Best Supporting Actress at just age 10, a significant turning point in her career.

Starred as Annie Cooper in the family drama 'Family'. This was her highest profile TV role, providing regular work and cementing her status as a child star.

Continues to appear in various television series and made-for-TV movies, maintaining a consistent presence in the entertainment industry. Examples include 'Little Miss Marker' (1980).