From Wiktionary, the free dictionary
From longboard + -er.
longboarder (plural longboarders)
- One who rides a longboard.
2007 February 11, Matt Higgins, “Surf’s Up, and Upscale, as Sport Reverses Its Beach Bum Image”, in New York Times[1]:A former professional longboarder, Huerta, 28, works in international sales and merchandising for a denim company.