Leanna is of Greek origin, derived from the female given name Helen. It means "torch" or "light". The name was popularized by the fictional character LeAnna, created by American author Mary Roberts Rinehart in her 1910 novel "The Man in Lower Ten". Leanna gained prominence as a unique feminine name during the early to mid-20th century.
Leanna was quite popular as a baby girl name in 1987 with exactly five babies being given this name that year.