Hennessey may refer to:
Names edit
- Hennessey, Irish surname
Places edit
- Hennessey, Oklahoma, United States
- Hennessey Formation, Oklahoma, United States
- Lake Hennessey, California, United States
Media and entertainment edit
- Hennesey, a 1959–1962 television series
- Crossing Hennessy, a 2009 Hong Kong film
Business and trade edit
- Hennessey Performance Engineering, a sports car company
Vehicles edit
- Hennessey Venom GT, a record-breaking sports car built by Hennessey
- Hennessey Venom F5
- Hennessey Monoplane