Cardwell can refer to:
- Places
- Cardwell, Queensland, Australia
- Cardwell, Missouri, USA
- Cardwell, Montana, USA
- Cardwell Hall, Kansas State University, USA
- People
- Dale Cardwell, American consumer advocate and journalist
- Don Cardwell, American baseball player
- Edward Cardwell, English theologian
- Edward Cardwell, 1st Viscount Cardwell, 19th Century English politician, and Secretary of State for War
- John Edwin Cardwell, British missionary in China
- Joi Cardwell, musician
- Joi Gilliam, musician
- Joshua Cardwell, Northern Ireland politician
- Lloyd Cardwell, American football player
- Louis Cardwell, English footballer
- Paul Cardwell, British advertising executive
- Richard H. Cardwell, American lawyer and politician
- Steve Cardwell, Canadian ice hockey player
- Tony Cardwell, New Zealand racing driver
- Vicki Cardwell, Australian squash player
- Things
- Cardwell reforms of the British army
- Cardwell (electoral district), a former Canadian federal electoral district