Julia Margaret Duffy is an American actress. From 1983 to 1990, she played Stephanie Vanderkellen in the TV series Newhart.

Filmography

• The 'Burbs — Lynn Gardner
• Palm Royale — Mary Jones Davidsoul
• Night Court — Susan
• 2022Christmas with the Campbells — Liz
• Country Comfort — Abigail
• Black Monday — Maxine Blackmore
• 2019Christmas at the Plaza — Amanda Clark
• 2019Fair Market Value — Isabel
• 2019Grand-Daddy Day Care — Bonnie
• 2019Yinz — Mrs. Szyzmanski
• The Cool Kids — Francine
• American Housewife — Amanda
• 2015All She Wishes — Grace
• Scream Queens — Bunny Radwell
• 2014Camp X-Ray — Betty
• Looking — Dana Murray
• Anger Management — Phyllis
• Key & Peele — Mom
• Shameless — Candace Lishman
• Suburgatory — Emmaline
• 2010Bed & Breakfast — Mrs. Harvey
• The League — Martha
• 20087 Things To Do Before I'm 30 — Vanessa Madison
• 2008Merry Christmas, Drake & Josh — Mrs. Hayfer
• 2008Together Again for the First Time — Audrey Wolders Frobisher
• True Jackson, VP — Ms. Watson
• 2007Be My Baby — Doris
• Wizards of Waverly Place — Ms. Angela
• The Suite Life of Zack & Cody — Martha Harrington
• CSI: NY — Millie Hanford
• Drake & Josh — Mrs. Hayfer
• Joey — Kimberly
• Listen Up! — Jane McKillop
• 2003Charlotte's Web 2: Wilbur's Great Adventure — Charlotte (voice)
• 2003Dumb and Dumberer: When Harry Met Lloyd — Jessica's Mom
• 2003Intolerable Cruelty — Sarah Sorkin
• Men, Women & Dogs — Dr. Fletcher
• Reba — Mrs. Hodge
• Twice in a Lifetime — Sophie Price / Barbara Nash
• Histeria!
• Love Boat: The Next Wave — Fran Dettweiler
• George & Leo
• Pepper Ann — Aunt Fanny (voice)
• Social Studies
• 7th Heaven — Mrs. Porter
• 1996Kidz in the Wood — Ms. Felicia Duffy
• Sabrina, the Teenage Witch — Lucy
• The Drew Carey Show — Lindsay Mercer
• Diagnosis: Murder — Lorraine Kay
• 1993Sex, Shock & Censorship in the 90's — Politically-Correct Mom
• The Mommies — Barb Ballantine
• Baby Talk — Maggie Campbell
• 1990Menu for Murder — Susan Henshaw
• 1990The Love Boat: A Valentine Voyage — Myrna Foley
• 1989The Cover Girl and the Cop — Jackie Flanders
• 1988Maybe Baby — Casey
• Designing Women — Allison Sugarbaker
• 1984Children in the Crossfire — Dee Malone
• 1983Imps* — Majorie
• Wizards and Warriors — Princess Ariel
• Cheers — Rebecca Prout
• Hotel — Arlene Greenspan
• Newhart — Stephanie Vanderkellen
• The Blue and the Gray — Mary Hale
• Voyagers!
• 1982Wacko — Mary Graves
• 1981Butcher, Baker, Nightmare Maker — Julie
• 1981Cutter's Way — Young Girl
• Simon & Simon
• 1980Battle Beyond the Stars — Mol
• Big Shamus, Little Shamus
• Eight Is Enough
• Lou Grant — Charlene
• The Love Boat — Sandy, Paula

Appearances as themselves (1)

• Golden Globe Awards — Self - Nominee