Abstract: A sun visor extension includes a base and an extension member connected to move relative to the base. Once the base is attached to a surface of an existing vehicle sun visor, a user selectively slides the extension member between a stowed position either in front of or behind the sun visor and a deployed position extending laterally from the sun visor. One embodiment of the base includes a channel for receiving an edge of the extension member, and the extension member includes opposing ends having stop members to prevent the extension member from being separated from the base. The position of the base relative to the sun visor is adjustable to allow the position of the fully deployed extension member to be adjusted.