Hol or HOL may refer to:
- Hol IL, a sports club in Hol municipality, Buskerud county
- Hol (role-playing game)
- HOL (proof assistant), a family of interactive theorem proving systems
- Hands On Learning, a student re-engagement program implemented by Hands On Learning Australia
- Head-of-line blocking, a performance-limiting phenomenon in computer networking
- Hellas On-Line, a Greek Internet service provider
- Higher-order logic, a branch of symbolic logic
- House of Lords, the upper house of the UK parliament
- House of Leaves, a novel by Mark Z. Danielewski
- Hounds of Love, an album by Kate Bush
- tlhIngan Hol, the Klingon language
- High Order Language, another term for High-level programming language
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