| Acronym | Definition |
|---|
| WTCA➣World Trade Centers Association |
| WTCA➣Wood Truss Council of America (Madison, Wisconsin) |
| WTCA➣Welsh Terrier Club of America |
| WTCA➣World Trade Center Amsterdam (commercial center) |
| WTCA➣Water Terminal Clearance Authority |
| WTCA➣West Texas Cycling Association (Lubbock, TX) |