Abstract: This is an adjustable foot rest assembly for kayaks, including a pair of channel members, with indexing slots and an inverted T-slot along the base, serving as a track along which a pair of foot pad assemblies are slidably moved. The channel members, or guide rails, are secured to each side, inside the front section of the kayak where the feet of the paddler are. The foot pad assembly, including an integrally connected hollow I-beam, a foot pad or rest, and a spring-actuated trigger with indexing pin, is supported in the channel members on which it is adapted to slide from a rear position to an extended or forward position, thereby accommodating the leg length of taller or shorter kayakers.