Tyendinaga is a township in the Canadian province of Ontario, located in Hastings County.

The township comprises the communities of Albert, Blessington, Chisholms Mills, Ebenezer, Halston, Kingsford, Lonsdale, Lonsdale Station, Melrose, Marysville, Milltown, Myrehall, Naphan, Read and Shannonville.

A radio transmitter for the Canadian Broadcasting Corporation is located in Read.

[2] Saint Charles Borromeo Cemetery is also located in Read.

[3] Mother tongue (2016 census):[1] Shipman’s Flour and Sawmill was constructed in 1851 and bought by William Fraser Chisholm in 1857, and known as Chisholm's Mills since.