Nixon, Both an English and a Scottish surname, meaning son of Nick (a pet form of Nicholos, see immediately above). In 1890 the surname was principally found in Antrim, Cavan and Fermanagh, and the estimated number of bearers was 2,110. In the United States it is the 661st most numerous surname with an estimated 49,500 bearers. In England and Wales in 1996 it was the 469th most numerous surname.