Alphabetically Union List - Y
- Yahata Workers Union
- Yamada Somboon Workers Union of Thailand
- Yamada Workers Union
- Yamaha Workers Union
- Yamaken Apparrel Workers Union
- Yamasei Thai workers' union
- Yan Wo Yun Labur Union
- Yauth International Workers Union of Thailand
- Yawata Workers Union
- Yenthong Workers Union
- YMP Print and Dye Workers Union of Thailand
- Yongsanga Workers Union
- York Thai Workers Union
- Yorosu Thailand Workers Union
- Yoshi Sava Thai Workers Union
- Yoshi Tade Samphan Labour Union
- Yoshi Tade Samphan Workers Union
- YS Phan Workers Union
- Yuan San Thailand Labour Union
- Yuasa Battery Workers Union
