Zachary David Alexander Efron (or [[FanNickname Zefron]], born October 18, 1987) is an American actor and singer whose first (and most famous) major role was as Troy in ''Film/HighSchoolMusical''. Since then, some think that [[SugarWiki/HeReallyCanAct he has branched into a more "serious" actor with better performances.]] He often plays the BigManOnCampus.

He dated [[RealLifeRelative HSM co-star]] Music/VanessaHudgens for five years. They split in late 2010; both attribute the breakup to simply growing up.

He may [[MemeticMutation also be]] [[Manga/DeathNote Kira]].

!! Selected filmography:
* ''Series/{{Firefly}}'' (2002) as young Simon Tam
* ''Film/HighSchoolMusical'' (2006) as Troy Bolton
** ''High School Musical 2'' (2007)
** ''High School Musical 3: Senior Year'' (2008)
* ''Film/{{Hairspray}}'' (2007) as Link Larkin
* ''Film/SeventeenAgain'' (2009) as teen Mike O'Donnell
* ''Film/MeAndOrsonWelles'' (2009) as Richard Samuels
* ''Film/CharlieStCloud'' (2010) as Charlie St. Cloud
* ''Film/NewYearsEve'' (2012) as Paul
* ''Film/LiberalArts'' (2012) as Nat
* ''Dr. Seuss' WesternAnimation/TheLorax'' (2012) as Ted Wiggins (voice)
* ''Film/ThatAwkwardMoment'' (2014) as Jason Flynn
* ''Film/{{Neighbors|2014}}'' (2014) as Teddy Sanders
** ''Neighbors 2: Sorority Rising'' (2016)
* ''Film/DirtyGrandpa'' (2016) as Jason Kelly
* ''Film/MikeAndDaveNeedWeddingDates'' (2016) as Dave Stangle
* ''Film/{{Baywatch|2017}}'' (2017) as Matt Brody
* ''Film/TheDisasterArtist'' (2017) as Dan Janjigian
* ''Film/TheGreatestShowman'' (2017) as Phillip
!!Tropes applying to Efron:
* AdamWesting: He appeared in a ''Series/SaturdayNightLive'' sketch as Troy Bolton returning to East High to tell the seniors that in the real world [[SpontaneousChoreography people don't begin singing and dancing]] [[LampshadeHanging out of nowhere]].
* MeanCharacterNiceActor: He is known for playing a lot of BigManOnCampus characters like Teddy in Neighbors or some others characters with jerkass tendencies. In real life however, he is very nice and friendly guy as well a big StarWars geek.
* MrFanservice: Takes his shirt off a lot. Is also ''tricked'' into taking his shirt off a lot.