OHL or Ohl may refer to:

• Latvian Hockey Higher League, known in Latvian as the Optibet hokeja līga
• 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, one of the three Major Junior ice hockey leagues which constitute the Canadian Hockey League
• Open Hardware License (disambiguation)
• Oral hairy leukoplakia, a type of oral pathology
• 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
• Overhung Load, in regard to an electric motor it is the allowable radial load on the shaft of a motor, at a certain distance from the base of the shaft.

• Don Ohl (1936–2024), American NBA professional basketball player
• Maude Andrews Ohl (1862–1943), American journalist, poet, novelist
• Russell Ohl (1898–1987), American crystal engineer recognized for patenting the modern solar cell

• Ohl, Pennsylvania, an unincorporated community