Charles Owen Waterhouse ISO (19 June 1843 – 4 February 1917) was an English entomologist who specialised in Coleoptera. He was the eldest son of George Robert Waterhouse. Waterhouse was an Assistant Keeper at the British Museum (Natural History), London. He wrote the Buprestidae part of Frederick DuCane Godman and Osbert Salvin's Biologia Centrali-Americana (1889) and very many papers on the worldwide beetle collections of the museum, describing hundreds of new species.