The name Indre is a girl's name of French origin. Indre and is often added to lists like Unique Girl Names: Unusual and Rare and discussed in our forums with posts like "Build a sibling set together!".
From the experts:
The Indre is a river in France. Spelled Indra, it's the name of a powerful deity worshipped by Hindus, Buddhists and Jains -- roughly the South Asian equivalent of the Greek Zeus or Norse Odin. But either Indra or Indre might make a simple, exotic, attractive name for a modern little girl.