Kathryn Ann Sackhoff (born April 8, 1980) is an American actress known for playing Lieutenant Kara "Starbuck" Thrace on the Sci Fi Channel's television program Battlestar Galactica (2004–2009). She was nominated for four Saturn Awards for her work on Battlestar Galactica and won the award for Best Supporting Actress on Television in 2005.
Sackhoff also starred in the short-lived TV series The Fearing Mind (2000–2001) and The Education of Max Bickford (2001–2002); had recurring roles in the TV series Bionic Woman (2007), Nip/Tuck (2009), CSI: Crime Scene Investigation (2010–2011) and Star Wars: The Clone Wars (2012–2013); and had a lead role in the eighth season of 24 as Dana Walsh (2010). She voiced several characters, including Bitch Pudding, on Adult Swim's stop-motion animated series Robot Chicken. Between 2012 and 2017, she starred in the A&E and Netflix series Longmire as Deputy Sheriff Victoria "Vic" Moretti before recurring on The Flash as Amunet and appearing twice as herself on The Big Bang Theory.
She had lead roles in the films Halloween: Resurrection (2002), White Noise: The Light (2007), Batman: Year One (2011), The Haunting in Connecticut 2: Ghosts of Georgia, Sexy Evil Genius, Riddick, Oculus (2013) and Don't Knock Twice (2016).
She is also known as Kathryn Ann Sackhoff.