Antti-Matias Antero Autti (born 15 March 1985) is a Finnish snowboarder who won the Men's Superpipe at the 2005 Winter X Games.

His technical performance sparked the "1080 Revolution" and set a new standard in men's halfpipe competition, where athletes must throw at least one 1080, if not two back-to-back, in order to do well in contests.

Autti embarked on Billabong's Freeway Tour in August, which spirits Billabong-sponsored riders to various contests in Australia and New Zealand.

Australian snowboarders on the Tour, Nick Gregory and Clint Allan, introduced Autti to their country's native wombats and kangaroos and got him addicted to pies.

Autti attended the event with Mattila, where they met the President, Tarja Halonen — who was re-elected for a second term on January 29, 2006 — and her husband Pentti Arajärvi.

At the 2006 Winter X Games, the extremely icy pipe proved to be hazardous to numerous riders, including Autti, and he came up short in his defense of his gold medal, finishing sixth.

Two weeks later at the 2006 Winter Olympics, despite a near-flawless run, he finished fifth[1] with a controversial low score of 39.1 that elicited plenty of "boos" from fans in the stands.

Most recently he won the 2008 Toyota Big Air Japan beating his fellow Flow teammate Risto Mattila, who came in second place.

Autti, who speaks Finnish, English and Swedish, enjoys skateboarding, photography, salmiakki, movies (especially Johnny Depp films) and music.

Some of his favorite artists include Turbonegro, The Hellacopters, Led Zeppelin, The Doors, David Bowie, Social Distortion, The Datsuns and Mötley Crüe.