HMSL Views 9 meanings found HMSL appears across business and academia, referring to vehicle lighting components, corporate entities, a specialized music specification language, and a university school focused on human movement and sports. Miscellaneous Hydrazine Mustard Spin Label Academic & Science School of Human Movement, Sports, and Leisure Computing Hierarchical Music Specification Language Business High Mounted Stop Lamp Hemosol Corporation Hospital Marketing Services Ltd Hibernia Management Services Ltd Hetero Med Solutions Ltd Honda Motorcycles and Scooters Ltd