A carrier for supporting a foldable picnic table at an undercarriage of a recreational vehicle includes parallel and spaced-apart left and right rail assemblies. The left rail assembly includes a left rail forming an upward-facing support surface configured to engage and support the table thereon, and front and rear mounting brackets spaced-apart along the left rail and upwardly-extending from the left rail. The front and rear mounting brackets of the left rail are configured to be secured to the undercarriage of the recreational vehicle. The horizontal distance between the front and rear mounting brackets and the vertical distance between each of the left and right mounting brackets and the left rail are adjustable. The right rail assembly is a mirror image of the left rail assembly.