Sydney Charles Tweed (September 25, 1886 – February 8, 1942) was a businessman and political figure in Ontario.

He represented Waterloo North in the Legislative Assembly of Ontario from 1929 to 1934 as a Liberal member.

[1] He was born in Vankleek Hill in 1886,[2] the son of William A. Tweed and Alice Sproule, of Irish descent.

Tweed was president and managing directory of the Ontario Equitable Life and Accident Insurance Co.

[2] He died suddenly at Winnipeg, Manitoba in 1942, and was buried at Brookside Cemetery at that city.