Bolshoye Maslennikovo ( ) is a village in Yaroslavl Oblast, Russia, located in the municipality of the Chebakovskoye rural settlement, Tutayevsky District. It lies about 20 km to the west from Yaroslavl. In 2010, the village was inhabited by 9 people.
Valentina Tereshkova, the first woman to fly in space during the Vostok 6 mission on 16 June 1963, was born there. The museum, Cosmos, devoted to Tereshkova and her flight, is in the village of Nikulskoye, about 5 km south of Bolshoye Maslennikovo.