Justin Monjo is an Australian screenwriter, television producer, and actor, best known for his work on Farscape.
He is the son of children's author F. N. Monjo III and the great-great-grandson of arctic furrier F. N. Monjo. Monjo wrote Adrian Pasdar's film debut screenplay Cement and worked on Young Lions. He created the 2005 TV series The Alice with Robyn Sinclair. He graduated from NIDA in 1985, alongside actresses Catherine McClements and Sonia Todd, and director Baz Luhrmann.