A rowing boat foot support assembly is provided with a support member, a shoe attachment member and a release trigger mechanism. The support member is configured to be coupled to a rowing boat. The shoe attachment member is pivotally supported on the support member. The shoe attachment member includes a base portion and a movable fixing portion that is movably arranged with respect to the base portion between a shoe retaining position and a shoe releasing position. The release trigger mechanism is provided between the support member and the movable fixing portion to move the movable fixing portion from the shoe retaining position to the shoe releasing position.