Brooke-Alvinston is a township municipality in the Canadian province of Ontario, located within Lambton County.

The municipality comprises the communities of Alvinston, Grays, Inwood, Rokeby, Sutorville, Walnut and Weidman.

Alvinston, the biggest urban centre of the municipality, is 55 kilometres (34 mi) east from Sarnia.

Alvinston holds a town-wide garage sale annually in May, a classic car and antique tractor show in June, Canada Day celebrations in July, and a Santa Claus Parade in December.

Historically, the community news was reported through two newspapers: the Glencoe-Alvinston Transcript & Free Press and the Watford Guide-Advocate.