Abstract: An improved child's seat for mounting at the edge of a table includes a pair of spaced U-shaped frame members and a seat and back releasably secured thereto. The seat and back defines channels which embrace portions of the frame members, and which may be snap-connected thereto for release therefrom. The channels provide extensions which define aligned apertures to snap-receive clip-providing locking pins. A removable vertical restraining post is snap-secured to the seat by locking hooks to prevent a child user from sliding forwardly off the seat. The frame members each mount a vertically extending strut. A lock assembly is slideably mounted on the strut for upward movement to clamp against the lower surface of a table top. The lock assembly resists downward movement via a wedge which bears downwardly against the strut. A spring so maintains the wedge-strut relationship.