This is a list of notable alumni of the Sigma Chi Fraternity. Many notable Sigma Chi Brothers are awarded the Significant Sig Award by headquarters, indicated by as superscriptS.
Professional golfer, PGA Tour, He is currently the World No. 7 ranked golfer, as of 4 May 2016. He has won 29 professional tournaments around the world. His biggest win to date was the 2013 Masters Tournament, his first major championship and the first Masters won by an Australian in its 77-year history.
Only person in history to serve as Chief of Staff for Governor of Florida (2011–12), President of Florida Senate (2011) and Speaker of Florida House of Representatives (1998–2000)
Canadian Ambassador to Austria, the International Atomic Energy Agency, United Nations Industrial Development Organization, the United Nations in Geneva and General Agreement on Tariffs and Trade.
Deputy Director, National Geospatial Intelligence Agency; Presidential Rank of Distinguished Executive; Retired Col, USAF; Awards include the Distinguished Flying Cross for combat operations, Presidential Meritorious Rank, the Legion of Merit
Commanding General at the U.S. Army Training Center Fort Jackson, S.C.; Deputy Director for Joint Training; Chief, Commanders Initiatives Group, U.S. Forces; Deputy Commanding General; Commander, 3rd Battlefield Coordination Dettachment, Eighth U.S. Army, Korea.
Won the 1993 Nobel Prize in Chemistry for his development of the Polymerase chain reaction (PCR), a central technique in biochemistry and molecular biology which allows the amplification of specified DNA sequences
^Underwood, Thomas A. (2000). Allen Tate: Orphan of the South. Princeton, New Jersey: Princeton University Press. p. 41. ISBN9780691069500. OCLC44090472. Across the street, in the Sigma Chi fraternity, he found a distracted seventeen-year-old named Merrill Moore, who was well on the way to becoming the most prolific sonneteer in history.