Neilson may refer to:
Places Zec Batiscan-Neilson, in the Portneuf Regional County Municipality, Quebec, Canada Neilson Township, in Portneuf Regional County Municipality, Quebec, Canada Neilson River (Bras du Nord), Saint-Raymond, Portneuf Regional County Municipality, Quebec, Canada
Business Neilson Dairy, or William Neilson Dairy Limited, a Canadian dairy company Neilson and Company, 19th century locomotive manufacturer in Glasgow, Scotland
Other uses Neilson (name), people with the given name or surname Roger Neilson Memorial Award, annual award for the top academic College/University player in the Ontario Hockey League
See also Nielsen (disambiguation) Neilston, a village and parish in East Renfrewshire in the west central Lowlands of Scotland