Krupin

Krupin is a Russian surname derived from the word krupa (крупа), meaning "grain". The name likely originated as an occupational surname for a grain merchant or miller, or perhaps as a nickname for someone with a small, agile physique resembling a grain. Its patronymic or possessive form indicates "belonging to Krupa" or "son of Krupa".

The surname is relatively uncommon, with most bearers concentrated in Russia and its neighboring regions. According to Forebears, the name is most frequent in Russia, followed by Belarus and Ukraine. It is ranked as the 1,606,737th most common surname globally, with an estimated 146 bearers. The largest numbers occur in Russia (133), where it is most prevalent in Krasnodar Krai and Sverdlovsk Oblast, with a density of 1 in 1,081,960 in Moscow.

A feminine form, Krupina, exists, which is used for female bearers or as a matronymic equivalent. The name is also related to the Polish surname Krupa, which shares an identical meaning and origin. Variations include Krupinová (Czech) and potential transliterations in other Cyrillic-based languages.

• Origin: Russian word krupa (крупа) meaning "grain"
• Type: Occupational surname (grain merchant/miller) or nickname
• Usage regions: Primarily Russia (especially Krasnodar Krai, Sverdlovsk Oblast) and surrounding Slavic countries