| Acronym | Definition |
|---|
| USL➣United Soccer Leagues |
| USL➣Utah State Library |
| USL➣Uterosacral Ligament (anatomy) |
| USL➣Unità Sanitarie Locali (Italian: Local Sanitary Unity) |
| USL➣Union Sportive de Luzenac (French: Sports Union of Luzenac; Luzenac, France) |
| USL➣Underwater Sound Laboratory (US Navy) |
| USL➣Underdog Sports Leagues (Seattle, WA) |
| USL➣Universal Static Line |
| USL➣United Spirits Limited (India) |
| USL➣University of Southwestern Louisiana |
| USL➣UNIX System Laboratories |
| USL➣Upper Specification Limit |
| USL➣United States 12 Month Oil Fund, LP (stock symbol) |
| USL➣Unskilled Labor |
| USL➣University of St. Louis (Tuguegarao City, Philippines) |
| USL➣Universal Sign Language |
| USL➣Unorthodox Scripting Language (computer programming) |
| USL➣Unlimited Site License (software agreement) |
| USL➣User System Language |
| USL➣User Services Layer |
| USL➣Up Stage Left |
| USL➣Universal Static Line (US Army) |
| USL➣Union Sportive Lavalloise (French sports organization) |
| USL➣Union des Sociétés Lausannoises (French: Union of Societies, Lusanne; Switzerland) |
| USL➣United States Laboratory |
| USL➣University School of the Lowcountry (Mt. Pleasant, SC) |
| USL➣Union Sportive Luzechoise (French sports organization) |
| USL➣Underwater Sound Lab (US Navy, Fort Trumbull, New London, CT) |
| USL➣Under Slung Load (aviation) |
| USL➣User Segmented Library |
| USL➣Unites States Lines, Inc |
| USL➣Upper Statistical Limit |