Sugar Island may refer to:
Islands Sugar Island (Michigan), in the St. Marys River between Michigan and Ontario Sugar Island (Detroit River), another Michigan island located in the Detroit River Sugar Island (Ohio), one of the Bass Islands in Lake Erie Sugar Island (St. Lawrence River), in the Thousand Islands region of Ontario Sugar Island (Maine), largest island of Moosehead Lake
Administrative divisions Sugar Island Township, Michigan
Unincorporated communities Sugar Island, Wisconsin