3 (višeznačnica)

3 n.e. - godina po kalendaru nove ere.
 3 p.n.e. - godina po kalendaru Prije nove ere.
 3 (broj) - prvi neparan prirodan broj

 Muzika 
 3 (rock grupa iz 1980ih), rock grupa: Keith Emerson, Robert Berry i Carl Palmer
 3 (rock grupa iz 1990ih), ekperimentalna progresivna rock grupa iz grada Woodstocka, (New York)
 "3" (pjesma), (2009) pjesma Britney Spears
 "3" pjesma grupe Disturbed, sa njihov albuma pod nazivom The Lost Children iz 2011.  
 BK3 ili 3 or Three (Tri)
 #3, pseudonim američkog muzičara Chris Fehn dok je svirao sa heavy metal grupom Slipknot

 Albumi 
 Three (The Black Heart Procession, album)
 III (Chad Brock, album)
 3 (The Butchies, album)
 3 (Calogero, album)
 Chicago III (album), grupa Chicago (1971.)
 III (Download, album)
 Three (End of Everything, album)
 3 (FireHouse, album)
 Focus III, grupa Focus (1972.) 
 3 (Ich Troje, album)
 3 (Indochine, album)
 Three (The John Butler Trio, album)
 Led Zeppelin III, grupa Led Zeppelin, (1970.) 
 III (Maylene and the Sons of Disaster, album)
 III (Moistboyz, album)
 III (Stanton Moore, album)
 III (Joe Nichols, album)
 Three (Nine Days, album)
 3 (Nouvelle Vague, album)
 3 (The Atomic Bitchwax, album)
 Three (Ph.D., album)
 Three (Joel Plaskett, album)
 3 (Pole album)
 Santana (1971 album) (Santana (grupa), treċi album)
 Sebadoh III
 3 (Shakespears Sister, album)
 III (Shiny Toy Guns, album)
 3 (Soulfly, album)
 3 (Suburban Kids with Biblical Names, album)
 Three (Sugababes, album)
 3 (Tibeta Ubik, album)
 Three (Tubeless Hearts, album)
 Three (U2 EP), EP grupe U2
 Van Halen III
 3 (Violent Femmes, album)
 3 (Final, album)
 Three (Armageddon, album), album grupe Armageddon
 Three, album, APB
 3 (Bo Bice, album)

 Film 
 Tri (1965 film), jugoslavenski film režisera Aleksandra Petrovića
 Three (1969 film), film u kojem igraju Charlotte Rampling i Sam Waterston
 3(1971 film), norveški film, Nicole Macé
 Three (2002 film), azijski horor film
 Three... Extremes, 2004 film
 Survival Island (film) ili Three, (2006) film u kojem glume Billy Zane i Kelly Brook
 Thr3e (film iz 2006.), film snimljen po romanu
 Three – Love, Lies and Betrayal, "Tri - ljubav, laž i izdaja"(2009) film u kojem glume Aashish Chaudhary, Nausheen Ali Sardar & Akshay Kapoor
 Tri (2010 film), njemački film 
 3 (2012 film), Tamilski film u kojem igraju Dhanush i Amala Paul

 Televizija 
 Three (TV serija), (1998) Američka TV serija
 3 (Dosjei X), epizoda serije The X-Files
 3: The Dale Earnhardt Story, (2004) televizijski film o Dale Earnhardt

 Ostalo 
 3 (New York City Subway service), servis podzemne željeznice grad New Yorka
 Tri (Enneagram), tip ličnosti po  "Enneagramu Karaktera"
 Thr3e, (2003) roman sa tematikom neizvjesnosti, autor: Ted Dekker
 Hutchison 3G ili 3, grupa UMTS-mreža u Evropi, Australiji i Azijiand Asia
 Mazda 3, kompaktni automobil