A high chair which includes a removable tray with a single-handed actuation handle for actuating a release mechanism. The actuation handle is located on the front edge of the tray and can be pushed slightly forward to operate the release mechanism which pivots fingers out of engagement with grooves located on the sides of the seat of the high chair. The seat can be removed from the high chair by actuating a latch located on a bottom side thereof and pivoting it slightly while lifting off to disengage notches defined on the back of the seat from an upper tubular member of a cradle which is attached to a frame and supports the seat thereon. The cradle can be pivoted relative to the frame to provide a plurality of positions for the seat, including an upright and a recline position. A pivoting mechanism includes a pair of nested hubs and a pin which selectively locks the hubs together. The cradle can be adjusted in height relative to the frame by actuation of a button and pin arrangement which engages with openings in a frame member. The frame can be securely placed into either an operational or a storage position by pivoting the rear frame member and allowing a latch to be operated to secure the rear frame member in either the operational or storage position.