The name Eetu is a boy's name of Finnish origin. Eetu and is often added to lists like Finnish Baby Names and discussed in our forums with posts like "Love, Like, Lose -- Outlandish/Guilty Pleasures edition!".
From the experts:
Eetu is a perennial favorite in Finland, but is rarely if ever used in the States - probably because of the unfamiliar (to most people) spelling and pronunciation.