The name Charlene is a girl's name meaning "free man". Charlene and is often added to lists like Coolator for Girls' Names and discussed in our forums with posts like "Girls Makeover - Two Middles".
From the experts:
Charlene is a Charlotte variation that, along with similar names like Arlene and Marlene, spiked in popularity in the 1940s and fifties, reaching a high of Number 100 in 1949. Most parents today would prefer one of the note classic versions -- or even nickname Charlie.