SMU can refer to:

Educational institutions

St. Martin's University, Lacey, Washington, United States St. Matthew's University, the Cayman Islands St. Michaels University School, Victoria, British Columbia, Canada Saint Monica University, Cameroon Samuel Merritt University, Oakland, California, US Sangmyung University, Seoul and Cheonan, South Korea Sefako Makgatho Health Sciences University, Limpopo, South Africa Shanghai Maritime University, China Sikkim Manipal University, Gangtok, India Singapore Management University, Singapore Southern Medical University, Tonghe, Guangzhou, China Southern Methodist University, Dallas, Texas, US SMU Mustangs, athletic teams Southeastern Massachusetts University, now University of Massachusetts Dartmouth, US Swansea Metropolitan University

Other uses Finnish Seafarers' Union (Finnish: Suomen Merimies-Unioni) Scandinavian Monetary Union, defunct Somray language Source measure unit, a type of test equipment Special mission unit, a type of military unit Suburban Multiple Unit (Queensland Rail) Suriname Men United, a gay men's organization Svenska Missionskyrkans Ungdom Scout System Management Unit, in Apple computers