Jackass 3D (known as Jackass 3 on home media) is a 2010 American 3D reality comedy film directed by Jeff Tremaine. It is the third installment in the Jackass film series, and the sequel to Jackass Number Two (2006). The film stars the regular Jackass cast of Johnny Knoxville, Bam Margera, Ryan Dunn, Steve-O, "Danger Ehren" McGhehey, Dave England, Preston Lacy, Wee Man, and Chris Pontius. This is the last Jackass film to feature Dunn before his death in 2011 and Margera as a primary cast member before his departure in 2020 (Margera is briefly in Jackass Forever). This is also the last Jackass film to feature a guest appearance by Rip Taylor, who died in October 2019.

The film was theatrically released in the United States in the 3D format on October 15, 2010, by Paramount Pictures, marking the tenth anniversary of the Jackass television series. It received generally positive reviews from critics. The film grossed $171.7 million worldwide against a production budget of $20 million. A sequel, titled Jackass Forever, was released on February 4, 2022 to positive reviews.

Leftover film footage scenes was incorporated as a extended length feature released as Jackass 3.5, on DVD and Blu-ray on June 14, 2011.