David Knowles

• David Knowles (California politician), California State Representative
• David Knowles (cricketer), New Zealand cricketer
• David Knowles (footballer), English footballer
• David Knowles (scholar), English Benedictine monk and historian
• David Knowles (journalist), British journalist and podcaster
• David Knowles, British mountaineer killed during production of The Eiger Sanction (film)
• Davy Knowles, British blues guitarist and singer