There are two recognized subspecies of Yucatan Jay, . According to the 2009 Clements Checklist of the Birds of the World, Cyanocorax yucatanicus yucatanicus and Cyanocorax yucatanicus rivularis (Clements 2009). C. y. yucatanicus is found in southeastern Mexico on the Yucatan Peninsula to Belize and Peten of Guatemala. C. y. rivularis is found in the southeastern Mexican states of Tabasco and southwestern Campeche (Brodkorb 1940).
C. y. rivularis is larger and has a plumage that is somewhat brighter blue than nominate yucatanicus (Brodkorb 1940).