Valdís Óskarsdóttir (born 6 May 1949) is an Icelandic film editor, whose work includes The Celebration, Les Misérables, Finding Forrester and Eternal Sunshine of the Spotless Mind.

She received multiple awards in early 2005 for her work on Eternal Sunshine of the Spotless Mind. In addition, she has twice won the Danish Film Academy's Robert Award for Best Editing.

Sveitabrúðkaup (English: Country Wedding), her directorial debut, premiered in Iceland in August 2008.

Valdís was the primary editor on the following films, unless noted otherwise.

• Remote Control (Sódóma Reykjavík) (1992)
• The Biggest Heroes (De største helte) (1996)
• Dream Hunters (Draumadísir) (1996)
• The Last Viking (Den sidste viking) (1997)
• The Dance (Dansinn) (1998)
• The Celebration (Festen) (1998)
• Les Misérables (1998) (additional editor)
• Julien Donkey-Boy (1999)
• Mifune's Last Song (Mifunes sidste sang) (1999)
• Finding Forrester (2000)
• Labyrinth (Labyrinten) (2000) (miniseries)
• When the Sun Goes Down (Solen er så rød) (2000)
• Bear's Kiss (2002) (consulting editor)
• The Sea (Hafið) (2002)
• Sweet Dreams (Skagerrak) (2003)
• It's All About Love (2003)
• Toss-Up (Yazi tura) (2004) (with Uğur Yücel)
• Eternal Sunshine of the Spotless Mind (2004)
• Mister Lonely (2005)
• Overcoming (2005)
• A Man Comes Home (En mand kommer hjem) (2007)
• Mongol (Монгол) (2007) (with Zach Staenberg)
• Country Wedding (Sveitabrúðkaup) (2008) (also director and screenwriter)
• Vantage Point (2008) (replaced by Stuart Baird and credited as additional editor)
• Metalhead (2013)
• Lost River (2014) (co-edited with Nico Leunen)
• A Beautiful Now (2015) (co-edited with Adam H. Mack)
• Autumn Lights (2016)
• Kursk (2018)
• Flag Day (2021)

• Official Site
• Valdís Óskarsdóttir at IMDb