Siemon is both a surname and a masculine given name, a variant of Simon. People with the name include: Surname: Gustav Siemon (1918–2011), German politician Jeff Siemon (1950), former professional American football player Uwe Siemon-Netto (1936), German international columnist Given name: Siemon Allen, South African contemporary artist Siemon Muller (1900–1970), American paleontologist and geologist German masculine given names Surnames from given names