Kate Walsh is an American film and television actress, best known for her role as Dr. Addison Montgomery on the ABC dramas, Grey's Anatomy and Private Practice. Other television roles include Rebecca Wright on NBC's Bad Judge, Nicki Fifer on ABC's The Drew Carey Show, and Jenny on ABC's Norm.

Film credits include Staten Island Summer, Any Day, Everything Carries Me to You, Just Before I Go, Dermaphoria, The Perks of Being a Wallflower, Kicking & Screaming, Inside Out, After the Sunset, Under the Tuscan Sun, The Family Man, Heaven, and Normal Life.

Theatre credits include her Off-Broadway debut as Molly in Dusk Rings a Bell (Atlantic Theater Company); Susanne/Peter’s Wife/Edda in Born Guilty (Red Orchid Theatre); Penelope in Happy Birthday, Wanda June (Stage Left Theatre); the Stewardess in Flight Courier Service and The Four Twins (Ontological Theatre); Troilus and Cressida (Chicago Shakespeare Theater); and A Pinter Landscape (Piven Theatre).