Gitche Manitou (Gitchi Manitou, Kitchi Manitou, etc.) means "Great Spirit" in several Algonquian languages. Christian missionaries have translated God as Gitche Manitou in scriptures and prayers in the Algonquian languages.
Manitou is a common Algonquian term for spirit, mystery, or deity. Native American Churches in Mexico, United States and Canada often use this term.