Alphabetically Union List - R
- R&D Next Technology Labour Union
- Rak Itsaraphap Workers’ Union”
- Rangyer Beverage Workers Union
- Ratchada Steel Center Workers Union
- Raynunakhon Garment Workers Union
- Rayong TPI Service Workers Union
- Ready Made Food and Beverage Workers Union
- Relate Workers Union
- Rely Workers Union
- Restaurant Workers Union
- Rian Chai Ceramics Labour Union
- Rides Beach Resort Labour Union
- Rocket Steel Workers Union of Thailand
- Ropakorn Supervisory Labour Union
- Royal Ceramics Saraburi Workers Union
- Royal Orchid Workers Union
- Royal Porcelain Workers Union
- RS Cannery Labour Union of Thailand
- Ruam Namjai Thai Arrow Workers Union
- Ruamjai 90 Workers Union
- Ruamjai SAC Workers Union
- Ruamjai Workers Union
- Ruamkancharoen Workers Union
- Ruamkanpennueng Workers Union
- Rubber Products Workers Union of Thailand
- Rumjai Eurosia 2003 Labour Union
- Ruskin Samphan Workers Union
