Shayne Robert Topp (born September 14, 1991) is an American actor and comedian most known for his work on Smosh, of which he has been a cast member since 2015. He is also known for his roles as Shayne Zabo on Disney Channel's So Random!, and as Matt Bradley in ABC's The Goldbergs.

This biography of a living person relies too much on references to primary sources. (August 2020)

Shayne was born on September 14, 1991, in Florida, to Catherine Topp (née Person) and Robert Royal Topp,^[1] a fighter pilot.^[2] He grew up in Phoenix, Arizona,^[3] but moved to Los Angeles, California when he was a teenager, where he attended a high school for young actors to be able to continue acting while going to school. He is also in possesion of a psychology degree.^[4]

Topp got his acting debut with a leading role in the 2006 film Moonpie and later had a guest role in the Nickelodeon series iCarly. He went on to win the Jury Prize at the 2009 Los Angeles Film Festival for his performance in Dear Lemon Lima.^[5] In 2012, Topp appeared in the Disney Channel show So Random! alongside fellow future Smosh member Damien Haas.

Topp played recurring character Matt Bradley on ABC's The Goldbergs in seasons 4-10 from 2017-2023, and reprised his role in a cameo in the spin off series Schooled.^[6]

Topp also has experience in theater performances, starring in The Best Christmas Pageant Ever at Wonderworks Theatre Company and Willy Wonka and the Chocolate Factory at Highland Lakes Theatre (in the title role). Additionally, he has appeared in commercials.^[7]

Topp holds a degree in psychology from Arizona State University, which he completed in 2019 after ten years of intermittent online studies.^[4]

On March 29, 2024, Topp married fellow Smosh cast member Courtney Miller at the Santa Barbara County Courthouse. They intentionally chose to announce their marriage on April Fools' Day.^[8]