Transportation
- Napier & Son, a British engine manufacturer
- Napier-Railton, an aero-engined racing car built in 1933
- The Napier-Bentley, a vintage racing car
- American Napier (automobile), an early automobile
- Air Napier, a charter airline in New Zealand
- Napier Express, a New Zealand passenger express train
- HMS Napier, a number of ships in the British Royal Navy
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