Dreyer (crater)
 Dreyer is the remnant of a lunar crater on the far side of the Moon. It is located along the eastern edge of the Mare Marginis about midway between the craters Ginzel to the north and Erro to the south-southeast.The rim of this crater is heavily worn with multiple impacts overlaying the edge and a small gap at the south end. The satellite crater Dreyer C lies across the northeastern rim while Dreyer K intrudes into the southeastern side.