Joseph Northwood (January 11, 1809 – October 29, 1886) was an Irish-born manufacturer, merchant and political figure in Ontario, Canada.
He sat for Lambton division in the Senate of Canada from 1880 to 1886.
[1] He was born in Westport, County Mayo, and came to Canada in 1832, settling in Chatham.
Northwood ran unsuccessfully for a seat in the legislative Assembly for the Province of Canada in 1864.
Northwood served as a member of the council for the town of Chatham.