The name Sanne is a girl's name of Dutch origin meaning "lily". Sanne and is often added to lists like Gorgeous Flower Names for Babies and discussed in our forums with posts like "Heaven/Hell/Purgatory -- All Girls Edition!".
From the experts:
Sanne is hugely popular in the Netherlands, but almost unknown here — which makes it an interesting prospect for the parent in search of an unusual name. Pronounced sah-na, Sanne is in keeping with the Dutch taste for nicknames plucked from the middle or end of a name vs. the beginning, such as Bas for Sebastien or Bram for Abram.