Hatley was a Canadian township (canton) in the Estrie region of Quebec.
The territory of the township was later divided, which led to the creation of current Hatley township (municipalité de canton) and Hatley municipality (municipalité), amongst others.
Over the years, the territory of Hatley township, created in 1803 and inhabited since 1795, gave rise to different administrative units.
From that time on, multiple territories were again detached, creating North Hatley in 1897, Sainte-Catherine-de-Hatley in 1901, Ayer's Cliff in 1909, Hatley village municipality in 1912 and Hatley-Partie-Ouest in 1917.
The latter two were merged on 27 September 1995 to form Hatley municipality.