CTM
- Association of Technology, Management and Applied Engineering
- CTM (South Africa)
- CTM Festival
- Canadian Tire money
- Cell Transmission Model
- Chaland de transport de matériel
- Chatham railway station (Kent)
- Cheltenham railway station, Melbourne
- Chemical transport model
- Chetumal International Airport
- Chicken tikka masala
- Close to Metal
- Community Trade Mark
- Compagnie de Transports au Maroc
- Companhia de Telecomunicações de Macau
- Computational theory of mind
- Concepts, Techniques, and Models of Computer Programming
- Confederation of Mexican Workers
- Corner transfer matrix
- Corporate travel management
- Cretaceous Thermal Maximum
- Critical thermal maximum
- Kattankulathur railway station