Brachydiceratherium is an extinct genus of teleoceratine rhinocerotid that inhabited Eurasia during the Oligocene and Miocene epochs.

The genus Brachydiceratherium was first described by R. Lavocat.

[3][4][2] Alternatively, the genus may not be separated from Diaceratherium,[4][2] which in turn may be treated as the subgenus Diaceratherium of the genus Brachypotherium.

[3] Species that have been placed in Brachydiceratherium include:[5][2] B. lamilloquense was a browser that mainly fed on soft vegetation.

B. lemanense was likewise a browser, though at some sites, its dental wear patterns are consistent with mixed feeding.