Ryan Dunn

Hours before the crash, Dunn had posted a photo to his Twitter account of himself and Hartwell drinking at a West Chester bar. Dunn was identified in the police report as the vehicle's driver, and a subsequent toxicology report showed Dunn had a blood alcohol level of 0.196 g/dL – more than twice the state's maximum legal limit of 0.08%. The police report stated "speed may have been a contributing factor in the crash" and preliminary investigations suggested the car had been traveling between 132 and 140 miles per hour (212 and 225 km/h) in a 55 miles per hour (89 km/h) zone.

The 2013 film Jackass Presents: Bad Grandpa is dedicated to Dunn.

In August 2012, the parents of Zachary Hartwell filed a civil suit in the Court of Common Pleas of Philadelphia County, naming the co-administrators of Dunn's estate as defendants, along with Barnaby's West Chester, the Pennsylvania bar where Dunn drank prior to the fatal crash. The suit claims negligence and recklessness, as well as wrongful death in the incident that killed 30-year-old Hartwell.

Dunn co-hosted G4's Proving Ground along with Jessica Chobot, which made its premiere on June 14, 2011, six days before his death. However, according to a G4 spokesperson, the channel decided to postpone the airing of further episodes. The spokesperson added, "The show is off the schedule as of today until we discuss next steps." On June 27, G4 announced they would air the remaining episodes starting on July 19, 2011. At the time of his death, Dunn was working on the film Welcome to the Bates Motel. The film was later renamed The Bates Haunting and was released in 2013.

On June 20, 2011, at around 3:30 a.m. EDT, Dunn and Zachary Hartwell, a production assistant on Jackass Number Two, were killed when Dunn's Porsche 911 GT3 veered off the road, struck a tree, and burst into flames in West Goshen Township, Chester County, Pennsylvania. Dunn had turned 34 nine days prior. He was buried at Highland Drive Cemetery, Brecksville, Ohio.

Dunn also came in at number three in top trending searches of 2011 on Google's Zeitgeist report following his death.

On November 28, 2011, MTV aired an hour-long tribute to Dunn, where several details of his life previously unknown to the public were revealed as well as never-before seen stunts he performed. Dunn's parents, sister, friends and both Jackass and Viva La Bam cast mates recalled his early beginnings to final months.

Bam Margera stated during a December 2, 2008, radio interview with Big O and Dukes of 106.7 WJFK-FM, that he and Dunn would be going to Italy to film Where the F*%# Are My Ancestors. That same month, Dunn appeared on the episode "Smut" of Law & Order: Special Victims Unit in December 2008. He is also featured in a movie called Street Dreams which was released in spring 2009. He co-starred along with Rob Dyrdek and Paul Rodriguez Jr. Dunn was also featured on a show with fellow Jackass star Bam Margera about them traveling through Europe in a Viva la Bam-like show called Bam's World Domination for Spike. He appeared in Jackass 3D, which was released on October 15, 2010.

In 2006, Dunn and Bam Margera participated in the Gumball 3000 road rally in Margera's Lamborghini Gallardo. He later went on a tour with Don Vito called "The Dunn and Vito Rock Tour" for which the DVD was released on March 20, 2007. Dunn and Margera again participated in the rally in 2008.

During shooting of the closing scenes for Jackass Number Two in 2006, Dunn injured his shoulder during one of his final bits, where he and co-star Bam Margera are pulled out of shot by a running horse by a rope tied around their feet. Dunn dropped straight onto his shoulder, causing damage to the muscles and leading to a blood clot that was at one point life-threatening, due to its proximity to his heart and brain. While seeking treatment for it and Lyme disease, Dunn became depressed, eventually cutting off all contact with his friends, co-workers, and others for nearly two years, and did not participate in Jackassworld.com: 24 Hour Takeover, or any subsequent events related to the films and series. He eventually returned to the Jackass cast in the production of Jackass 3D and Jackass 3.5 later saying that he was happy to rejoin the cast and had more enjoyment working on Jackass 3D than any previous film endeavors.

Dunn was born in Medina, Ohio and spent much of his childhood in Brecksville, Ohio. From 2002 to his death, Dunn was in a long-term relationship with Angie Cuturic, who had a part in Margera's directorial debut Haggard: The Movie and later Minghags. Dunn had several tattoos of Cuturic, including in his inner arm and left ring finger.

Dunn rose to fame in the late 1990s as a member of the CKY Crew with his long-time friend, Bam Margera, for their extreme stunts and pranks recorded on camera, which led to the rise of Jackass. Dunn also hosted Homewrecker and Proving Ground, and appeared in the feature films Blonde Ambition and Street Dreams, as well as in Margera's films Haggard and Minghags. Dunn died in a car crash in 2011 at the age of 34.

Ryan Matthew Dunn (June 11, 1977 – June 20, 2011) was an American stunt performer, television personality, comedian, actor, writer, musician, and one of the stars of the MTV reality stunt show Jackass.