| Acronym | Definition |
|---|
| CCTM | Colorado Council of Teachers of Mathematics (National Council of Teachers of Mathematics) |
| CCTM | Certified Community Transit Manager (Community Transportation Association of America) |
| CCTM | Canada Creek Tea Merchants (Nova Scotia, Canada) |
| CCTM | Central Council of Tibetan Medicine (est. 2004; Himachal Pradesh, India) |
| CCTM | Crude Custody Transfer Meter |
| CCTM | Coastal Council of Teachers of Mathematics (Texas) |
| CCTM | CSIA (Central Sponsor for Information Assurance) Claims Tested Mark (now CESG Claims Tested Mark; computer security) |