Bihor may mean:
- Bihor County, in Romania
- Bihor Mountains, in Romania
- Bihor, Montenegro
- Bihor (region), in Montenegro
Bihor is a geographical region in northeastern Montenegro. The region is within three municipalities: Berane, Bijelo Polje and Petnjica. It was named after Bihor, a former medieval town that was near Bijelo Polje. The region mainly consists of ethnic Bosniaks.
Bihor was a former medieval castle and town, now in ruins, approximately 10 km north of present-day Berane, Montenegro. It gave its name to the Bihor (region) of Montenegro.