Centaur Press, later renamed Centaur Books, was a New York-based small publisher active from the late 1960s through 1981. The press was founded by and Donald M. Grant. It was primarily a paperback publisher, though one of its more successful titles was reissued in hardcover. It was notable for reviving pulp adventure and fantasy works of the early twentieth century for its "Time-Lost Series." Centaur's output was small, generally on the order of one to three books a year. Its publications featured thicker and less acidic paper than that utilized by most paperback houses.