The Greater Lincolnshire Combined County Authority (GLCCA) is a combined county authority for the ceremonial county of Lincolnshire, which is made up of the county council area of Lincolnshire in the East Midlands region and the two unitary authorities of North Lincolnshire and North East Lincolnshire in the Yorkshire and Humber region of England. The first election for the Mayor of Greater Lincolnshire, who will chair GLCCA, is expected to take place in May 2025.