Simon Viklund (born Simon Wiklund, December 1, 1979) is a Swedish freelance video game composer, music producer, sound designer and game designer, who was first known for his work on the 2008 game Bionic Commando Rearmed, in which he was a creative director and composer. He is also known for his work on the Payday series as a composer and the voice of the character Bain.

In 2000, Viklund joined his friend Ulf Andersson's company, Grin, and worked on most of the company's games, which included Bionic Commando: Rearmed. Grin went bankrupt in 2009, leading Viklund, Ulf Andersson and his brother Bo to found Overkill Software. Viklund left Overkill in 2015 to become a freelancer. In 2016, he joined 10 Chambers Collective, another company founded by Ulf Andersson, while continuing his freelance projects.