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Cognomen Sergiy (Sergiy , Сергий , セルゲイ ) , in the entire world, is quite a rare surname. The family name Sergiy is habitual in Bhutan, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Bulgaria, where it is a rare surname. In absolute terms, the name is most common in China, Spain, and Bhutan. More prevalently, Sergiy is the forename as well as the last name.
Vovk, Lytvynenko, Vasylyev, Voloshyn, Marchenko, Matviychuk, Melnychuk, Savchenko, Sergiyenko, Kovalenko, Kovalchuk, Romanenko, Goncharov, Tkachenko, Nazarenko, Shevchenko, Snigovskyy, Bondarenko, Bondarchuk, Kravchenko, Prokopenko, Prokoptsiv, Petrenko, Polishchuk, Pavlenko, Khomenko, Moroz, Boyko, Kozak, Koval, Popov, Orlov, Melnyk, Shvets, Bondar, Pavlov, Petrov, Ivanov, Savchuk, Serdyuk, Rudenko, Lysenko, Tkachuk, Novikov, Fedorov, Oliynyk, Shevchuk, Kravchuk, and Nesterenko