The name Friso is a boy's name of Dutch origin meaning "a Frisian". Friso and discussed in our forums with posts like "Quick Question Thread?!".
From the experts:
Friso is a name that refers to Frisian person living in the Dutch province of Friesland. The name has become more popular in recent years as it was used for a member of the Dutch royal family, making it one of the more adventurous royal baby names.