Alliant may refer to: Alliant Aviation, an American aircraft manufacturer based in Three Rivers, Michigan and later in Richland, Michigan Alliant Destiny Fusion, an American powered parachute design Alliant Destiny XLT, an American powered parachute design Alliant Computer Systems, an American computer company that designed and manufactured parallel computing systems Alliant Credit Union, a Chicago-based financial cooperative Alliant Energy, an American public utility holding company that incorporated in Madison, Wisconsin in 1981 Alliant Energy Center, an American multi-building complex in Madison, Wisconsin Alliant Exchange, Inc, an American food service company Alliant International University an American private, higher education institution based in San Diego, California Alliant Techsystems, an American aerospace, defense, and sporting goods company based in Arlington County, Virginia Alliant RQ-6 Outrider, an American unmanned aerial vehicle