Gallery Launch Gallery Getty

Polly Holliday -- a veteran actress with roles in some of the biggest movies of the last few decades -- has died ... according to her longtime agent.

The star passed away Tuesday at her home in Manhattan, her agent and friend Dennis Aspland tells TMZ. He also told us Polly battled health issues for several years before dying of suspected pneumonia. Everett Collection

Holliday began her career on the screen in the mid-1970s ... grabbing parts in "All the President's Men" and "Distance" before she won a lead role on the hit sitcom "Alice."

In the show -- loosely based on Martin Scorsese 's 1974 movie "Alice Doesn't Live Here Anymore" -- Holliday played Flo Castleberry, one of the title character's coworkers. Getty

Fans will remember her famo

See Full Page