Cognomen Demyon (Demyon 
) , globally, is a very rare surname. The last name Demyon is characteristic of Northern America, particularly Canada, where it is a very rare surname, and the United States. Much less frequently, Demyon is the forename as well as the last name.
Mary, Nancy, Orest, Steven, Curtis, Leslie, Joseph, Jennie, Judith, Thomas, Nathan, Eugene, Barbara, Gregory, Michelle, Nicholas, Christine, Catherine, Tonya, Philomena, Tanya, Lydia, Madi, Cole, Dale, Gene, Greg, John, Judy, Nick, Marci, Sonya, Steve, Scott, Brady, Kathy, Kevin, Phena, Logan, James, and Elizabeth