| Abbreviation | Definition |
|---|---|
| TAY | Transitional Age Youth |
| TAYA | Trans American Youth Activity |
| TAYB | Taneytown Area Youth Basketball |
| TAYB | Thomas Armour Youth Ballet |
| TAYO | Ten Accomplished Youth Organizations |
| TAYT | Te Aranui Youth Trust |
| TBOY | Taking Back Our Youth |
| TBYFL | Tampa Bay Youth Football League |
| TCCY | Tennessee Commission on Children and Youth |
| TCK | Third Culture Kids |
| TCK | Trans-Culture Kid |
| TCYFL | The Chicagoland Youth Football League |
| TCYFL | Thurston County Youth Football League (Tumwater, WA) |
| TDYF | The Dalles Youth Football |
| TEYN | Toronto East Youth Nation |
| TFY | Together For Youth |
| TFY | Travel For Youth |
| TFYG | Taoist Federation Youth Group |
| THYL | Tower Hamlets Youth League |
| TIYO | Toledo International Youth Orchestra |