Hornblower may refer to:
In fiction:
- Horatio Hornblower, a fictional officer of the British Royal Navy created by C.S. Forester
- Hornblower (TV series), a series of television programmes based on Forester's novels
- A family of hobbits in the works of J.R.R. Tolkien
- Hornblower, the pre-Crisis superhero name of Mal Duncan, a DC Comics character
People:
- Jabez Carter Hornblower (1744–1814), pioneer steam engineer
- Joseph Hornblower (1696?–1762), steam pioneer who installed Newcomen engines in Cornwall
- Joseph Coerten Hornblower (1777–1864), American lawyer and Chief Justice of the New Jersey Supreme Court
- Josiah Hornblower (1729-1809), steam pioneer and American politician
- Jonathan Hornblower (1753-1815), Cornish engineer and inventor
- Jonathan Hornblower (1717) (1717-1780), steam pioneer, father of Jonathan and Jabez Hornblower
- Simon Hornblower (born 1949), Professor of Classics at University College London
- William B. Hornblower (1851-1914), New York jurist
- Nathanial Hörnblowér, a pseudonym of the musician MCA
Other uses:
- Hornblower Cruises, San Francisco-based charter yacht, dining cruise and ferry service company
- Hornblower Hybrid, the first known multi-hulled hybrid ferry boat in the United States