CGM may stand for:
- CTVglobemedia, a Canadian media conglomerate
- Camiguin Airport
- Cassava green mite
- CGM Funds, a series of investment funds
- CMA CGM, a French shipping line
- Consumer generated media
- CompuGroup Medical, a leading software provider for eHealth solutions
- Computer Graphics Metafile
- Conspicuous Gallantry Medal
- Constrained Generative Model
- Corn gluten meal
- Codex germanicus monacensis, a German-language manuscript in the Bayerische Staatsbibiothek in Munich
- Continuous Glucose Monitoring
- Conjugate gradient method, an algorithm for the numerical solution of particular systems of linear equations