Bill the Lizard is a fictional character appearing in Lewis Carroll's 1865 novel Alice's Adventures in Wonderland.

He seems to accept the task at first, but when he sees Alice in the window and realizes that he's been asked to retrieve a "monster", he tries to run in terror.

Hearing her inhale frantically, the White Rabbit hides and the Dodo is knocked off the roof as Alice wriggles inside, trying to suppress the sneeze.

A lizard identical in appearance to Bill, voiced by Wayne Allwine, is a member of Ratigan's gang in the 1986 film The Great Mouse Detective.

[1] Bill make cameo appearances in the film Who Framed Roger Rabbit, where he is helping someone hold a ladder in the studios of Maroon Cartoons, and in the television series House of Mouse, being seen walking along with Dodo in the opening sequence.

A character loosely based on Bill by the name Elizabeth appears in Once Upon a Time in Wonderland, portrayed by Lauren McKnight.

She tells Alice that she and the Knave were great friends in his earlier days, assisting him with many battles in Wonderland.

The Jabberwocky later finds Elizabeth's dead body and takes her eyes so that Jafar can track down Cyrus's lamp.

Bill serves as the "Keeper of Truth" and guards Ariko's (the "Alice" of the game) suppressed tragic memories until she is ready to accept them.