Family name Сойкова (Сойкова 
) , all over the world, is a very rare last name. The last name Сойкова is characteristic of Bulgaria, where it is a rare surname, Kyrgyzstan, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Eastern Europe, particularly Bulgaria, Ukraine, and Russia.