| Abbreviation | Definition |
|---|---|
| YBC | Youth Bowling Congress |
| YBL | Yawkey Baseball League |
| YBL | Youth Basketball League |
| YBO | Young Bucks Outdoors |
| YBO | Youth Basketball Organization |
| YBR | Your Baltimore Ravens |
| YBS | Your Best Shot |
| YBW | Yachting and Boating World |
| YC | Yellow Card |
| YCA | Yachting Club of America |
| YCA | Yealm Cruising Association |
| YCL | Yacht Council Limited |
| YCL | Youth Cycling League |
| YCR | Yacht Crew Register |
| YCT | Yacht Crew Training |
| YCW | Youth Championship Wrestling |
| YD | Yorkshire Divers |
| YD | Young Divers |
| YDS | Yards gained |
| YES | Yankees Entertainment Sports |