Thelma \th(el)-ma\ as a girl's name is pronounced THEL-mah. It is of Greek origin, and the meaning of Thelma is "will, volition". A literary creation from the 19th century by Marie Corelli for the title character of her 1887 novel. The movie "Thelma and Louise" gave the name exposure.
Thelma has 2 variant forms: Telma and Thellma.
For more information, see also the related name Velma.