Luna Maximoff was a minor character in the Marvel universe.
Luna was a character in the Incarnations of Immortality series by Piers Anthony.
Luna Inverse was a character in the manga series Slayers.
Luna was the name of a British children's Sci-Fi television series that ran from 1983-1984. It was also the name of the show's main character.
The Luna programme was a series of unmanned robotic missions untaken by the Soviets from 1959-1976.
Luna is the Latin name for Earth's moon. Luna reappeared on the Social Security Administration's top 1000 names in 2003 after a long absence at #890. It has steadily climbed the chart since then, and in 2011 it was ranked at #278.