Sagard is remembered for his writings on New France and the Hurons-Wyandot people, Le grand voyage au pays des Hurons (Paris, 1632).
His L'histoire du Canada (1636) included a revised and expanded Le grand voyage and Dictionnaire de la langue huronne (Dictionary of the Huron Language).
An English translation of Le grand voyage by historian George M. Wrong was published by the Champlain Society in 1939 as Sagard's long journey to the country of the Hurons.
In 2022, environmental historians Jennifer Bonnell and Sean Kheraf cited Gabriel Sagard – and specifically his description of giving a French domestic cat, which was exotic and non-indigenous creature North America, to his Indigenous Wendat hosts in 1632.
They suggested that Sagard's gift functioned as both a "tool of diplomacy" and a "creature of empire" and that it also "illustrate[d] the methodological challenges at the heart of the [growing] field of animal history.