The name Aino is a girl's name meaning "the only one". Aino and discussed in our forums with posts like "Which would you choose?".
From the experts:
What a lovely name for the much-longed for daughter - no wonder Aino is in the Top 5 in Finland, whence the name originates. Like other popular Finnish names, Aino is short and avoids the ubiquitous "a" ending we usually see in feminine names, which gives it a fresh feel and sound. The name Aino was created by Finnish author Elias Lönnrot who compiled the epic poem Kalevala. In the work, Aino was the only daughter of ambitious parents who chooses death rather than complying with her father's wish that she marry a powerful but old God. The name was immediately popular with the Finnish nationalist community and has recently enjoyed a resurgence of popularity.