What does Luther mean?
Luther \l(u)-ther\ as a boys' name is pronounced LOO-ther. It is of Old German origin, and the meaning of Luther is "soldier of the people". Usually used as homage to Martin Luther, the German religious reformer, or to Martin Luther king, Jr, the civil rights activist. Singer Luther Vandross
Luther is a very popular first name for males (#309 out of 1220, Top 25%) and also a very popular last name for all people (#2438 out of 150436, Top 2%). (2000 U.S. Census)
Shown below is the baby name popularity of Luther for boys. Luther reached its apex position of #68 in the U.S. then, but is not in the Top 1000 at the moment. (2014 Birth Statistics)