SHM may stand for:
- Supporting Healthy Marriage, a marriage education research study
- Simple harmonic motion, a concept in physics
- Shared memory, in computer science
- Nanki-Shirahama Airport, IATA airport code
- Structural health monitoring
- Super highway mode a hypermiling technique
- Somatic hypermutation, a mechanism that allows for immune system adaptation
- Super High Material; a manufacturing process utilized on some Japanese pre-recorded Compact Discs (SHM-CDs) and super audio compact discs (SHM-SACDs)
- Swedish House Mafia, a group of Swedish house DJs, consisting of Axwell, Steve Angello, and Sebastian Ingrosso