Feodor Vassilyev (Russian: Фёдор Васильев, older spelling: Ѳеодоръ Васильевъ) (c. 1707 – 1782) was a peasant from Shuya, Russia. His first wife is claimed to have lived to be 76, and between 1725 and 1765, have had 69 children (16 pairs of twins, 7 sets of triplets, and 4 sets of quadruplets); 67 of them survived infancy with the loss of one set of twins: the record for most children born to a single woman. However, their names, dates of birth, and dates of death are all unknown. The data about Vassilyev's children are included in the Guinness Book of World Records.