Merrin Dungey (born August 6, 1971) is an American actress who played Ursula in Once Upon a Time.

She also played Barbara Snow in Revenge, Francie Calfo/Allison Doren in Alias, Dr. Naomi Bennett in the pilot episode of Grey's Anatomy and Private Practice, Alissa Barnes in Betrayal, Kelly Palmer in The King of Queens, Kitty Kenarban in Malcom in the Middle, and Monica Finch in the Castle episode "Den of Thieves". She plays Maxine Barton in the ABC TV show Conviction.