GtMN
| Acronym | Definition |
|---|---|
| GtMN | Great Malvern (station code; First Great Western Ltd.; UK) |
| GtMN | Gay Teen Meeting Network (Young Adult Services of Pennsylvania) |
| GtMN | Groupware-Based Topic Map Navigator (software) |
| GtMN | Groupement Tactique Multinational (French: Multinational Battle Group; NATO) |
| GtMN | Técnico do Grupo de Manutenção (Portuguese: Technical Maintenance Group; AES Tiete; Brazil) |