Old Empires is an accessory for the fictional Forgotten Realms campaign setting for the second edition of the Advanced Dungeons & Dragons fantasy role-playing game.

Pages 7–10 briefly describe the lands surrounding the Old Empires, which include Thay, Semphar and Murghôm, Aleaxtis (kingdom of the sahuagin), the Plains of Purple Dust, the Coastal Cities, Aglarond, Raurin, Durpar, Veldorn, Eastern Shaar, and Chondath.

Unlike the typical deities of the Forgotten Realms, the people of Mulhorand worship the gods of Egypt, such as Isis, Thoth, and Osiris.

[1] In the June 1990 edition of Games International, the reviewer thought this supplement represented "the usual TSR value for money."

The reviewer criticized the lack of any included adventure, but concluded "I'm sure we'll see some full-fledged modules set there appearing soon.