MLSA

MLSA is an initialism that can refer to a number of things:


 * Medical Laboratory Scientists' Association, an Irish trade union
 * Ministry of Labour Staff Association, a former British trade union
 * MLSA1 and MLSA2, genes required for mycolactone biosynthesis
 * Multilocus sequence analysis, a molecular biology technique involving Multilocus sequence typing
 * Museum and Library Services Act, that established the Institute of Museum and Library Services
 * Mutual Logistics Support Agreement, an agreement signed in 2002 as part of Philippines–United States relations