OHL may refer to:
- Oberste Heeresleitung, the Supreme Army Command of Germany in World War I
- Obrascón Huarte Lain, a Spanish construction company
- Old Hill railway station's National Rail station code
- Ontario Hockey League
- Oud-Heverlee Leuven, a Belgian football club
- Overhead line, such as an overhead electric line used for railway and tram electric power supply
- Ozburn-Hessey Logistics
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