Great Crosby is an area of the town of Crosby, in the Metropolitan Borough of Sefton, Merseyside, England and is historically, part of Lancashire.

Crosby is a coastal town in the Metropolitan Borough of Sefton, Merseyside, England. Historically in Lancashire, it is north of Bootle, south of Southport and Formby, and west of Netherton. It abuts the areas of Blundellsands to the north and Waterloo to the south. It is approximately 6 miles (9.6 km) north of Liverpool City Centre.