Group 1 may refer to: Alkali metal, a chemical element classification for Alkali metal Group 1, the highest classification of race for thoroughbred horses Group 1 (motorsport), a regulation set of the FIA for series-production touring cars used in motorsport. Group 1 Automotive, a publicly traded car dealership group in the United States Group 1 Rugby League, a Rugby League Competition in New South Wales, Australia Fax Group 1 & Group 2 are obsolete analog standards for sending faxes Group 1 Software, a former mail, messaging, and document management provider company, acquired by Pitney Bowes in 2004