Abstract: A baby carrier construction is disclosed, including a seat assembly with four downwardly converging side walls, a bottom wall and a pair of horizontally spaced leg holes in one of the walls. A mounting assembly is provided on one side wall of the baby carrier and includes a leveling assembly having a bearing member spaced outwardly from the side wall and spacer elements extending between the side wall and bearing member to maintain the spaced relationship. The mounting assembly also includes a hook assembly provided at the top of the leveling assembly for detachably mounting the baby carrier to a shopping cart or similar wheel-supported vehicle. The leveling assembly is movable between a leveling position for maintaining the baby carrier in a substantially level disposition when mounted on a shopping cart, and a retracted position flushly disposed against the adjacent side wall for facilitating nested stacking of the baby carrier with one or more similar carriers.