Buy River
 Buy (Russian: Буй) is a river in Perm Krai the Republic of Bashkortostan and the Republic of Udmurtia Russia. It is a left tributary of the Kama River. It is 228 km in length with a drainage basin of 6530 km².It starts in south of Perm Krai in Kuyedinsky District. Then it flows through northwestern part of Bashkortostan and flows into Kama River on area of Udmurt Republic to the south of town Kambarka. Main tributaries:Left: Arey AmzyaRight: Oshya Piz.