A child bath seat, adapted for use with a bathtub, includes a seat body that includes both a seat and a retaining structure extending above the seat for laterally retaining a child seated in the seat body. The seat also includes a bracing structure that holds the seat body in an upright position. The bracing structure has a first end attached to the seat body, and a second end, defining a recess, for receiving an upper edge of a side of the bathtub. The seat also includes a foot structure attached to the bracing structure and capable of being placed in contact with a predominantly horizontal surface outside the bathtub. The child bath seat can be adjustable to accommodate varying bathtub side widths and varying bathtub depths and can be suspended above or a portion of the bath seat can rest on the bottom surface of the bathtub.