Leanna \le(an)-na\ as a girl's name is pronounced lee-AHN-ah. It is of English origin. Possibly derived from an Irish Gaelic form of Helen; most likely a blend of Lee and Anna. In Latin, the word "leana" means "lioness", and thus the name may be a feminine variant of Leo or Leon. See also Liana. Country-western singer LeAnn Rimes.
For more information, see also the related name Aileen.