Kathleen Erin "Kate" Walsh (born October 13, 1967) is an American film and television actress, currently known for her role as Dr. Addison Montgomery on the ABC dramas Grey's Anatomy and Private Practice.
Known For

The Dog
Claire
2024

Sting
Sandy
2024

Sometime Other than Now
Kate
2021

Emily in Paris
Madeline Wheeler · (8 episodes)
2020

Honest Thief
Annie Wilkins
2020

3022
Jackie Miller
2019

The Kelly Clarkson Show
(2 episodes)
2019

Almost Love
Elizabeth
2019

The Umbrella Academy
The Handler · (16 episodes)
2019

Fam
Jolene · (1 episode)
2019

Ideal Home
Kate
2018

Mark Felt: The Man Who Brought Down the White House
Pat Miller
2017

If I Forget
Holly Fischer
2017

Girls Trip
Elizabeth Davelli
2017

#realityhigh
Dr. Fiona Shively
2017

13 Reasons Why
Olivia Baker · (27 episodes)
2017

13 Reasons Why: Beyond the Reasons
Self · (3 episodes)
2017

Staten Island Summer
Danny's Mom
2015

Just Before I Go
Kathleen Morgan
2015

Comedy Central Roast of Justin Bieber
Self
2015

Any Day
Bethley
2015

The Late Late Show with James Corden
Self - Guest · (1 episode)
2015

Bad Judge
Rebecca Wright · (13 episodes)
2014

Desiree
Morell
2014

Fargo
Gina Hess · (4 episodes)
2014

The Tonight Show Starring Jimmy Fallon
(1 episode)
2014

Scary Movie 5
Self
2013

The Perks of Being a Wallflower
Mother
2012

Bethenny
Self - Guest · (1 episode)
2012

Angels Crest
Roxanne
2011

Comedy Central Roast of Charlie Sheen
Self - Roaster
2011

Legion
Sandra Anderson
2010

Watch What Happens Live with Andy Cohen
Self - Guest · (3 episodes)
2009

One Way to Valhalla
Raina
2009

Childrens Hospital
Self · (1 episode)
2008

Childrens Hospital
Self (uncredited) · (1 episode)
2008

The Gong Show with Dave Attell
(1 episode)
2008

Private Practice
Addison Montgomery · (111 episodes)
2007

1408
Mike Enslin's Ex-wife (uncredited)
2007

Veritas, Prince of Truth
Nemesii
2007

Asssscat
Monologist
2007
Girl Missing
Abbie Pennington
2007

Rachael Ray
(1 episode)
2006
The Showbiz Show with David Spade
(2 episodes)
2005

Bewitched
Sexy Waitress
2005

Inside Out
Tyne
2005

Kicking & Screaming
Barbara Weston
2005

Eyes
(1 episode)
2005

Eyes
Kendall Judd · (13 episodes)
2005

Grey's Anatomy
Addison Montgomery · (67 episodes)
2005

American Dad!
Teacher (voice) · (1 episode)
2005

American Dad!
Prostitute (voice) · (1 episode)
2005

Wake Up, Ron Burgundy: The Lost Movie
Sue
2004

After the Sunset
Sheila
2004

Complete Savages
Maggie · (1 episode)
2004
The Tony Danza Show
Self · (2 episodes)
2004

Cheap Seats
Rochelle · (79 episodes)
2004
The Men's Room
Karen · (4 episodes)
2004

Karen Sisco
(2 episodes)
2003

Under the Tuscan Sun
Grace
2003

Happy Family
Joanna · (1 episode)
2003

The Ellen DeGeneres Show
Self · (2 episodes)
2003

Comedy Central Roasts
Self · (1 episode)
2003

Jimmy Kimmel Live!
Self · (2 episodes)
2003

The Family Man
Jeannie
2000

The Weber Show
Stace · (1 episode)
2000

CSI: Crime Scene Investigation
Mimosa · (1 episode)
2000
The Mike O'Malley Show
Marcia · (13 episodes)
1999

The Norm Show
(5 episodes)
1999

Turks
Terry · (13 episodes)
1999

Cupid
(1 episode)
1998

Three Below Zero
Moriat Greenberg
1998

Peppermills
Lena
1998

Night of the Lawyers
Pressie Brooks
1997

The View
Self · (4 episodes)
1997

King of the Hill
Katt Savage (voice) · (1 episode)
1997

Henry: Portrait of a Serial Killer, Part 2
Cricket
1996

Swift Justice
(1 episode)
1996

Normal Life
Cindy Anderson
1996

MADtv
Self - Special Guest · (1 episode)
1995

The Drew Carey Show
Nicki Fifer · (22 episodes)
1995

Late Night with Conan O'Brien
Self - Guest · (1 episode)
1993

Homicide: Life on the Street
(1 episode)
1993

LIVE with Kelly and Mark
(2 episodes)
1988
Joint Custody
Florence · (1 episode)

Law & Order
Kirstin Blair · (1 episode)
1990
Romy Award
Self - Presenter · (1 episode)
1990

Golden Globe Awards
Self · (1 episode)
1944