Jim Muir was born in 1958 in Venice, California. He is a professional skateboarder and skateboarding entrepreneur. He began skateboarding in 1963. He was a member of the Z-Boys skate team based in Santa Monica, California. Muir was the first member of the Z-Boys to use urethane wheels, and convinced Zephyr Surf Shop owner Jeff Ho to order them for the team. After the Z-Boys team collapsed, he skated for Sims Skateboards and, with Bob Biniak, helped to invent the first laminated skateboards.