| Abbreviation | Definition |
|---|---|
| CHA | Certified Horsemanship Association |
| CHA | Charlotte Hornets |
| CHA | College Hockey America |
| CHAOS | Camping Hiking And Outdoor Survival |
| CHAOS | Climbing Hills And Other Sports |
| CHC | Canadian Heavyweight Champion |
| CHC | Chicago Cubs |
| CHCC | Crest Hollow Country Club |
| CHGC | Cedar Hills Golf Club (Victoria, BC) |
| CHMM | Charles Hartley Memorial Meet |
| CHP | Carolina Horse Park |
| CHRA | Continental Historic Racing Association |
| CHRB | California Horse Racing Board |
| CHRF | Club Handicap Racing Fleet |
| CHW | Chicago White Sox |
| CHY | Columbus hilltop YMCA |
| CI | Capitol Ice |
| CI | Crowd Involvement |
| CIA | Cardinals In Action |
| CIA | Central Indiana Academy of Wrestling |