| UCIW | |
| Location Country: | Trinidad and Tobago |
| Members: | Approx 800 (2007) |
| Full Name: | Union of Commercial and Industrial Workers |
| Headquarters: | Laventille, Trinidad and Tobago |
| Key People: | Kelvin Gonzales, President |
The Union of Commercial and Industrial Workers is a trade union in Trinidad and Tobago which was once one of the major unions organising shop workers. It has since diminished in both size and significance.