USL

USL is an abbreviation for

• United Soccer League , the umbrella organization for several North American soccer leagues
• Unix System Laboratories , the Unix development division of AT&T and later Novell
• University of Southwestern Louisiana
• United Supporters Luzern , an independent umbrella organization for active fans of the Luzern football club
• United States Lines , an American shipping company
• upper specification limit (opposite of lower specification limit LSL, both arithmetic variables in statistical quality assurance )
• Uniunea Social Liberală , National Liberal Union, center-left party union in Romania

This is a disambiguation page for differentiating between several terms identified with the same word.