Jacob Benjamin "Jake" Gyllenhaal (born December 19, 1980) is an American actor. The son of director Stephen Gyllenhaal and screenwriter Naomi Foner, he began acting [[FormerChildStar at the age of ten]]. Following his first lead role in ''Film/OctoberSky'', he starred in the indie CultClassic ''Film/DonnieDarko'', in which he played a psychologically troubled teenager alongside his older sister, [[Creator/MaggieGyllenhaal Maggie]]. In 2002, he starred in another indie film, ''Film/TheGoodGirl'', alongside actress Creator/JenniferAniston. In 2004, he appeared in the ScienceFiction film ''Film/TheDayAfterTomorrow'', portraying a student caught in a cataclysmic global cooling event.

He then [[PlayingAgainstType played against type]] as a frustrated Marine in ''Film/{{Jarhead}}'' in 2005. The same year, his role as Jack Twist in ''Film/BrokebackMountain'' earned him critical acclaim. For his performance he won the UsefulNotes/{{BAFTA}} Award for Best Supporting Actor and was nominated for the UsefulNotes/AcademyAward in the same category. He has since played the lead roles in many notable films, including ''Film/{{Zodiac}}'', ''Film/PrinceOfPersiaTheSandsOfTime'', ''Film/LoveAndOtherDrugs'', ''Film/SourceCode'', and ''Film/EndOfWatch''.
!He appeared in
* ''Film/CitySlickers''
* ''Series/HomicideLifeOnTheStreet''
* ''Film/OctoberSky''
* ''Film/BubbleBoy''
* ''Film/DonnieDarko''
* ''Film/TheGoodGirl''
* ''Film/TheDayAfterTomorrow''
* ''Film/BrokebackMountain''
* ''Film/{{Jarhead}}''
* ''Theatre/{{Proof}}''
* ''Film/{{Zodiac}}''
* ''Series/SaturdayNightLive''
* ''Film/{{Brothers|2009}}''
* ''Film/PrinceOfPersiaTheSandsOfTime''
* ''Film/LoveAndOtherDrugs''
* ''Film/SourceCode''
* ''Series/ManVsWild''
* ''Film/EndOfWatch''
* ''Film/{{Enemy}}''
* ''Film/{{Prisoners}}''
* ''Film/{{Nightcrawler}}''
* ''Film/{{Southpaw}}''
* ''Film/{{Everest|2015}}''
* ''Film/NocturnalAnimals''
* ''Film/{{Life|2017}}''

* FanCommunityNickname: His fans refer to themselves as "Gyllenhaalics".
* MrFanservice: Tends to do {{Shirtless Scene}}s in his films.
* RealLifeRelative: He and sister Maggie played siblings in ''Film/DonnieDarko''. Subverted with Creator/PeterSarsgaard in ''Film/{{Jarhead}}'' because they weren't brothers-in-law (Pete is Maggie's eventual husband) at the time.
* WhatCouldHaveBeen:
** Was set to play Franchise/SpiderMan in ''Film/SpiderMan2'' due to Creator/TobeyMaguire having injured his back while filming ''Film/{{Seabiscuit}}''. While Gyllenhaal was preparing for the role, Tobey recovered to reprise his role as Spider-Man.
** Auditioned for and was one of the top contenders for the role of [[Franchise/{{Batman}} Batman/Bruce Wayne]] in ''Film/BatmanBegins''. Was also on the shortlist to play Harvey Dent in [[Film/TheDarkKnight the sequel.]]
** Was, along with Creator/MattDamon, the studio's first choice for the role of Jake Sully in ''Film/{{Avatar}}'', but director Creator/JamesCameron chose to cast the (back then) more unknown Sam Worthington in the lead role instead.
** His parents forbade him to be in ''Film/TheMightyDucks'', as the film would have taken him out of town for two months (it was shot in Minnesota).
** He was cast as one of the Princes in ''Film/IntoTheWoods'', but dropped out to do ''Film/{{Nightcrawler}}'' instead