SZM or Szm can refer to:

Czechoslovak Socialist Youth Union (), youth wing of the Communist Party in the Czechoslovak Socialist Republic Sesriem airport (IATA code: SZM), in Sesriem, Namibia Shenzhen Metro, rapid transit system in Shenzhen, China Shizhong District, Neijiang, China (administrative division code: SZM), Silesian Museum (Opava) (), oldest and third largest museum in the Czech Republic. Subzi Mandi railway station (station code: SZM), suburban railway station in National Capital Territory of Delhi, India Szmikite (mineral symbol: Szm), monohydrate of Manganese(II) sulfate