General problems concerning Roman villas and the Roman economy in Histria (Yugoslavia) are followed by a discussion of nine Histrian villas, mainly excavated before 1914. Three types of villas—luxurious, farm-type, and mixed—are distinguished. The farm-type, with a manufacturing quarter, can have two subtypes, i.e. with specialized or mixed processing facilities. The third type has a mixture of agricultural function and luxurious appointments.