Julianne Nicholson (born July 1, 1971) is an American actress. She is best known for her roles in the films August: Osage County (2013) and Blonde (2022), as well as the television series Law & Order: Criminal Intent (2006–2009), Masters of Sex (2013–2014), Eyewitness (2016), and Mare of Easttown (2021), the lattermost of which earned her a Primetime Emmy Award. Nicholson's other notable credits include Tully (2000), Ally McBeal (2001–2002), Kinsey (2004), Conviction (2006), Boardwalk Empire (2011–2013), Black Mass (2015), I, Tonya (2017), Togo (2019), and The Outsider (2020).

Filmography

• 2026Untitled Woman — Dawn
• Dope Girls — Kate Galloway
• Paradise — Samantha 'Sinatra' Redmond
• 2025The Amateur — Director O'Brien
• 2024Janet Planet — Janet
• 2023Dream Scenario — Janet Matthews
• 2022Blonde — Gladys
• 2022Weird: The Al Yankovic Story — Mary Yankovic
• Hacks — Dance Mom
• Mare of Easttown — Lori Ross
• 2021With/In Volume 2 — (segment "Touching"), Director
• The Outsider — Glory Maitland
• 2019Initials S.G. — Jane
• 2019Monos — Doctora
• 2019Togo — Constance Seppala
• 2018Weightless — Janeece
• 2018Who We Are Now — Beth, Producer
• 2017From Nowhere — Jackie
• 2017I, Tonya — Diane Rawlinson
• Law & Order True Crime — Jill Lansing
• 2017Novitiate — Nora Harris
• Eyewitness — Helen Torrance
• 2016Sophie and the Rising Sun — Sophie Willis
• 201510,000 Saints — Harriet
• 2015Black Mass — Marianne Connolly
• The Red Road — Jean Jensen
• 2013August: Osage County — Ivy Weston
• Masters of Sex — Dr. Lillian DePaul
• 2012In Search of Avery Willard — Additional Photography
• 2012Keep the Lights On — Claire
• Boardwalk Empire — Esther Randolph
• 2010Shadows & Lies — Ann
• 2009Brief Interviews with Hideous Men — Sara
• 2009Staten Island — Mary Halverson
• The Good Wife — Callie Simko
• Conviction — Sara Finn
• 2006Flannel Pajamas — Nicole
• 2006Puccini for Beginners — Samantha
• 2006The Water Is Wide — Barbara
• 2006Two Weeks — Emily Bergman
• 2005Her Name Is Carla — Carla
• 2004Kinsey — Alice Martin
• 2004Little Black Book — Joyce
• 2004Seeing Other People — Alice
• 2002I'm with Lucy — Jo
• Presidio Med — Jules Keating
• 2002Speakeasy — Rebecca
• 2002Tully — Ella Smalley
• 2001Dead Dog — Charity
• Law & Order: Criminal Intent — Megan Wheeler
• 2000Godass — Nancy
• 2000Passion of Mind — Kim
• The Others — Marian Kitt
• 1999Harvest — Lou Yates
• Storm of the Century — Katrina Withers
• 1999The Love Letter — Jennifer
• 1998Curtain Call — Sandra Hewson
• 1998Long Time Since — Vivian James / Phoebe
• 1998One True Thing — College Student
• Ally McBeal — Jenny Shaw
• Dellaventura — Carol Dakin
• ER — Jordan
• Law & Order — Jessie Lucas
• Hallmark Hall of Fame — Barbara
• The Riders — Jennifer

Appearances as themselves (5)

• Paradise: Official Podcast — Self
• RuPaul's Drag Race — Self - Guest Judge
• The Megan Mullally Show — Self - Guest
• The View — Self
• The Emmy Awards — Self