MTSS

MTSS may refer to:

Organisations

 * Ministerio de Trabajo y Seguridad Social, the Uruguayan ministry of labour and social security
 * Ministry of Labour, Solidarity and Social Security (Ministério do Trabalho, Solidariedade e Segurança Social)
 * Military Training and Survival School, of the Irish Air Corps
 * Stock symbol of MTS (network provider) at the Moscow Exchange

Other uses

 * Medial tibial stress syndrome, known also as tibial periostitis or shin splints, a common injury affecting athletes
 * Manuscript tracking systems (MTSs); See iThenticate
 * Multiteam system (MTSs)