Masaki Tsuji(辻 真先Tsuji Masaki, born March 23, 1932 in Nagoya) is a Japanese scenario writer of TV series (including many anime works) and films as well as mystery fiction novels. Tsuji was most active in the business from the 1960s through the 1980s, and worked as a script writer on many popular anime TV series for Mushi Production, Toei Animation, and Tokyo Movie Shinsha. On September 24, 2008, Tsuji won a Special Award in the 13th Animation Kobe for his writing work.