The name Gwen is a girl's name of Welsh origin meaning "white circle". Gwen is ranked #862 on our popularity charts and is often added to lists like One-Syllable Middle Names for Girls and discussed in our forums with posts like "Names on NB that make you go WOW!".
From the experts:
While Gwen may have originated as a short form of Gwendolen and Gwendolyn, these days it frequently stands on its own. Rocker Gwen Stefani has given it a shot of cool, and parents are choosing it as a standalone more and more often—Gwen hopped back onto the US Top 1000 in 2013 after an absence of over 30 years. Gwen could also be short for Guinevere.