Tinker Bell (also known as Tinkerbell in common usage, or Tink for short), is a fictional character from J. M. Barrie's 1904 play and 1911 novel Peter and Wendy. She has also appeared in multiple film and television adaptations of the story, in particular the 1953 animated Walt Disney picture Peter Pan. She also appears in the "Peter and the Starcatchers" book series by Ridley Pearson and Dave Barry. At first only a supporting character described by her creator as "a common fairy", her animated incarnation was a hit and has since become a widely recognized unofficial mascot of The Walt Disney Company, and the centerpiece of its Disney Fairies media franchise including the direct-to-DVD film Tinker Bell. In her animated form she leaves a trail of twinkling pixie dust.

Tinker Bell was described by Barrie as a fairy who mended pots and kettles, like an actual tinker. Her dialogue consists of the sounds of a tinkling bell, which is understandable only to those familiar with the language of the fairies. Though sometimes ill-tempered and vindictive (getting the Lost Boys to shoot arrows at Wendy), at other times she is helpful and kind to Peter. The extremes in her personality are explained in-story by the fact that a fairy's size prevents her from holding more than one feeling at a time, so when she is angry she has no counterbalancing compassion. Fairies can enable others to fly by sprinkling them with fairy dust (sometimes called "pixie dust" by Disney, and presented as "starstuff" in Dave Barry and Ridley Pearson's novel series), in conjunction with thinking happy thoughts. At the end of the novel the suggestion is that Tinker Bell has died in the year after Wendy and the Darlings leave Neverland, and Peter has no memory of her at all.

Film adaptations provided the first vocal effects for the character, whether through sound—such as musical expressions or the sound of a tinkling bell—or human speech. In her most widely known appearance in the 1953 animated Peter Pan film, the character was animated and had no dialogue. She was played by Virginia Browne Faire in Herbert Brenon's 1924 version of Peter Pan, Julia Roberts in 1991's Hook, and by Ludivine Sagnier in P.J. Hogan's 2003 adaptation, which originally planned to use a computer-generated version of the character, but instead used Sagnier in combinations with digital models and effects to take advantage of the actress's expressions. Tinker Bell was voiced by Debi Derryberry in the 1990 Fox animated program Peter Pan and the Pirates, by Sumi Shimamoto in the 1989 anime series Peter Pan no Boken, and by Mae Whitman in the digitally animated 2008 DVD feature Tinker Bell.