Reiner Knizia (born 1957, Germany) is a German board game designer. He designed the Lord of the Rings board game, which has been his best-selling game so far. Reiner started developing games for Postspillion, a play-by-mail game Zine that he founded 1985. He started designing games full-time in 1997. He also holds a PhD in mathematics, and currently resides in England.