Atwater Avenue (officially in French: avenue Atwater) is a major north–south street located in Montreal, Quebec, Canada.

It links Doctor Penfield Avenue in the Ville-Marie borough to the north, and Henri Duhamel Street in the Verdun borough to the south.

The Montreal Forum, Place Alexis-Nihon, Dawson College, Atwater and Lionel-Groulx stations of the Montreal Metro, and the Atwater Market are located on this street.

Atwater Avenue owes its name to a local businessman and city councilor by the name of Edwin Atwater (1808-1874), who participated in the foundation of the Montreal City and District Savings Bank (later known as Laurentian Bank of Canada), and the Montreal Telegraph Company.

[1] It was in 1871, that Montreal City Council named the street after Atwater.