Valtteri is a forename. It is the Finnish form of Walter. Notable people with the name include: Valtteri Bottas (born 1989), Finnish Formula One driver. Valtteri Filppula (born 1984), Finnish ice hockey forward. Valtteri Hietanen (born 1992), Finnish ice hockey player. Valtteri Hotakainen (born 1990), Finnish ice hockey player. Valtteri Järviluoma (born 1993), Finnish ice hockey player. Valtteri Jokinen, Finnish judoka. Valtteri Karnaranta (born 2002), Finnish ice hockey player. Valtteri Kemiläinen (born 1991), Finnish ice hockey player. Valtteri Moren (born 1991), Finnish footballer.
https://en.wikipedia.org/wiki/Valtteri