The House of Gagarin (Russian: Гага́рин) is the name of a Russian princely family descending from sovereign rulers of Starodub-on-the-Klyazma.

[1] Yaroslav Vsevolodovich II of Vladimir (died 1246) gave his brother Ivan the appanage of Starodub.

[citation needed] The great-great-grandson of this Prince Ivan, Prince Ivan Fedorovich, called Lapa-Golibesovskoy, had a grandson, Ivan Mikhailovich Gagara, whose descendants, the Princes Gagarin, served the Russian throne as boyars and in other distinguished positions.

[citation needed] They were granted fiefdoms for their service to the tsar.

[2]