Alphabetically Union List - W
- Wachira Prakarn Hospital Workers Union
- Wachiraprakarn Hospital Supervisory Workers Union
- Water Shipping Workers Union (Bangkok)
- Water Transportation Thailand Workers Union
- Wattakul Workers Union
- Wattana Paisal Workers Union
- Wattanapanich Workers Union
- Weaving and Dying Labor Union
- Welt Draft Worekrs Union
- Wibulsilpa Workers Union
- Winbest Samphan Workers Union
- Wine Munch Schneider Workers Union
- Wisawakij Samphan Workers Union
- Wisky Producer Labour Union
- Wood Group Workers Union
- Wood Workers Union
- Worker of Samsung Labour Union
- World Precision Workers Union
- Wuili Labour Union
