Lahti is a Finnish surname meaning "bay" or "gulf". Geographical distribution As of 2014, 65.6% of all known bearers of the surname Lahti were residents of Finland (frequency 1:737), 22.0% of the United States (1:144,270), 7.6% of Sweden (1:11,357) and 2.4% of Canada (1:133,326). In Finland, the frequency of the surname was higher than national average (1:737) in the following regions: 1. South Ostrobothnia (1:295) 2. Central Ostrobothnia (1:318) 3. Pirkanmaa (1:437) 4. Central Finland (1:488) 5. Tavastia Proper (1:517) 6. Satakunta (1:532) 7. Southwest Finland (1:582) 8. Kymenlaakso (1:721) People Aimo Lahti (1896–1970), Finnish weapon designer Aki Lahti (1931–1998), Finnish chess master Arto Lahti (born 1949), Finnish professor and politician Christine Lahti (born 1950), American actress Jeff Lahti (born 1956), American baseball player Timi Lahti (born 1990), Finnish footballer References Finnish-language surnames Surnames of Finnish origin