RTM
- Exo (public transit)
- Marseille Metro
- RT middleware
- RTM Restaurant Group
- Radio Televisyen Malaysia
- Radio Thamesmead
- Radiodiffusion-Télévision du Mali
- Release to manufacturing
- Remember the Milk
- Representative town meeting
- Resin transfer molding
- Restricted Transactional Memory
- Right This Minute
- Right to manage
- Robert Tappan Morris
- Rotterdam The Hague Airport
- Rotterdamse Tramweg Maatschappij
- Royal Tyrone Militia
- Traumatic memories