Charles Johnson Maynard (May 6, 1845 – October 15, 1929) was an American naturalist and ornithologist born in Newton, Massachusetts. He was a collector, a taxidermist, and an expert on the vocal organs of birds. In addition to birds, he also studied mollusks, moss, gravestones and insects. He lived in the house at 459 Crafts Street in Newton, Massachusetts, built in 1897 and included in the National Register of Historic Places in 1996 as the Charles Maynard House.