The Adventures of Sharkboy and Lavagirl in 3-D (also known as The Adventures of Sharkboy and Lavagirl, or simply Sharkboy and Lavagirl) is a 2005 American 3D superhero adventure film co-written and directed by Robert Rodriguez and originally released in the United States on June 10, 2005, by Miramax Films and Dimension Films. The production companies were Dimension Films, Columbia Pictures, and Troublemaker Studios. The film uses the anaglyph 3D technology, similar to the one used in Rodriguez's Spy Kids 3-D: Game Over (2003). The film stars Taylor Lautner, Taylor Dooley, Cayden Boyd, David Arquette, Kristin Davis and George Lopez. Many of the concepts and much of the story were conceived by Rodriguez's children, most notably Racer Max.

Sharkboy and Lavagirl received mostly negative reviews from critics, with much of the criticism directed at the film's poor 3-D, while the visual aspects and performances received some praise. The film also underperformed at the box office, earning just $39.2 million in the United States and $32.8 million in other territories, for a worldwide total of $72 million on a $50 million budget. It has since garnered a cult following and is often regarded as a cult classic.

A standalone sequel titled We Can Be Heroes was released on Netflix on December 25, 2020, with Dooley reprising her role.