S. John Ross (the "S" stands for "Samuel") is a game designer, editor and graphic designer who has written books for Last Unicorn's Star Trek, Steve Jackson Games' GURPS and In Nomine, Guardian of Order's Big Eyes, Small Mouth, and many other game lines, including numerous magazine articles. These days his work is primarily electronic, self-published under the as Cumberland Games & Diversions banner.

See "S. John Ross: a quick bio" on his webpage for additional professional and personal details.