Austin Nichols (born April 24, 1980) is an American film, television actor and director who is perhaps best known for his role as Julian Baker in The CW drama series One Tree Hill.
He is also known for his roles in films such as The Day After Tomorrow and Wimbledon. He starred in the HBO series John from Cincinnati.
Austin Nichols had guest appearances in Sliders, Odd Man Out, CSI: Crime Scene Investigation, Family Law, Watching Ellie, and Wolf Lake before his graduation of a Bachelor of Arts degree in English, his big break came in 2002 when he appeared as Brenda Chenowith's lover in two episodes of Six Feet Under.
In 2004, Austin Nichols was cast as J.D., an intelligent rich kid and romantic rival to Jake Gyllenhaal's main character in the environmental blockbuster, The Day After Tomorrow. Also in 2004, he appeared in Wimbledon, opposite Kirsten Dunst and Paul Bettany.
After this success, Nichols co-starred in a pilot for 1/4 life, he then had a minor role in an obscure and panned 2005 film, Thanks to Gravity. Nichols followed this with short guest spots on episodes of Pasadena and Surface, before being cast in a successful 2006 film, Glory Road.
In 2007, Austin Nichols appeared as teacher for a few episodes of Friday Night Lights, before being cast in a recurring role on the The CW's One Tree Hill. He was upgraded to series regular for the seventh season.