Crazy Frog (originally known as The Annoying Thing) is a Swedish CGI-animated character and Eurodance musician created in 2003 by actor and playwright Erik Wernquist. Marketed by the ringtone provider Jamba!, the character was originally created to accompany a sound effect produced by Daniel Malmedahl while attempting to imitate the sound of a two-stroke engine.

The Crazy Frog spawned a worldwide hit single with a cover version of the Beverly Hills Cop theme tune "Axel F", which reached the number one spot in Turkey, New Zealand, Australia and most of Europe. The subsequent album Crazy Frog Presents Crazy Hits and second single "Popcorn" also enjoyed worldwide chart success, and a second album entitled Crazy Frog Presents More Crazy Hits was released in 2006, as well as a third album, Everybody Dance Now, released in 2009. The Crazy Frog also spawned many singles, a range of merchandise and toys, as well as two video games before going on hiatus in 2009.

On 22 April 2020, a Twitter account for the character was created, and the account is listed on the official website, Facebook profile and YouTube channel. A new album was announced later that same day. On 10 December 2021, a new single, "Tricky" was released after a 12-year hiatus.