Boris Mikhailovich (Russian: Борис Михайлович) was a 13th-century nobleman from Vladimir-Suzdal.
He is, controversially, considered by some to have been Prince of Moscow from 1248 to 1263, preceding Daniil Aleksandrovich, who is more often named as the first Prince of Moscow.
Boris was the son of Mikhail Yaroslavich Khorobrit, who was the younger brother of Aleksandr Nevsky, and would thus have been Daniil's uncle.
Following Boris' death, Daniil took control of Moscow only in about 1283.
[1] This Russian biographical article is a stub.