Audrey Hepburn (Holly Golightly), George Peppard (Paul Varjak), Patricia Neal (2E Failenson), Buddy Ebsen (Doc Golightly), Martin Balsam (O.J. Berman), José Luis de Vilallonga (José da Silva Pereira), John McGiver (Tiffany's Salesman) more..., Dorothy Whitney (Mag Wildwood), Stanley Adams (Rusty Trawler), Elvia Allman (Librarian), Alan Reed (Sally Tomato), Beverly Powers (Nightclub Stripper), Claude Stroud (Sid Arbuck), Mickey Rooney (Mr. Yunioshi), Don Anderson (Bartender (uncredited)), Al Avalon (Spieler at Stripjoint (uncredited)), Janet Banzet (Woman (uncredited)), Mel Blanc (Holly's Drunk Visitor (voice) (uncredited)), Joe Scott (Party Guest (uncredited)), Jim Michael (Strip Club Patron (uncredited)), Henry Barnard (Party Guest (uncredited)), Henry Beckman (Narcotics Detective Cronberger (uncredited)), Arthur Berkeley (Inmate (uncredited)), Nicky Blair (Party Guest (uncredited)), Willie Bloom (Inmate (uncredited)), Bill Bradley (Reporter (uncredited)), Thayer Burton (Girl in Shower (uncredited)), Florine Carlan (Party Guest (uncredited)), Sue Casey (Party Guest in Blue and Green Dress (uncredited)), Roydon Clark (Party Guest (uncredited)), Marian Collier (Party Guest (uncredited)), Christine Corbin (Sing Sing Prison Visitor (uncredited)), Dick Crockett (Cab Driver (uncredited)), Tom Curtis (Party Guest (uncredited)), Tommy Farrell (Party Guest (uncredited)), James Field (Party Guest (uncredited)), George Fields (Harmonica Player (uncredited)), Joseph Glick (Inmate (uncredited)), Joe Gray (Party Guest (uncredited)), Joseph J. Greene (Mr. O'Shaunessy (uncredited)) and others.

Martin Jurow (Producer), Richard Shepherd (Producer), George Axelrod (Screenplay), Henry Mancini (Original Music Composer), Franz Planer (Director of Photography), Howard A. Smith (Editor), Edith Head (Costume Supervisor) more..., Hubert de Givenchy (Costume Design), Truman Capote (Novel), Hal Pereira (Art Direction), Roland Anderson (Art Direction), John P. Fulton (Special Effects), Farciot Edouart (Special Effects), Sam Comer (Set Decoration), Ray Moyer (Set Decoration), William McGarry (Assistant Director), Pauline Trigere (Costume Design), Wally Westmore (Makeup Supervisor), Nellie Manley (Hair Supervisor), Hugo Grenzbach (Sound Recordist), John Wilkinson (Sound Recordist), Richard Mueller (Other), Johnny Mercer (Songs), Henry Mancini (Songs), Frank Inn (Animal Wrangler), Philip H. Lathrop (Additional Photography),