David Cowan

• David Cowan (cricketer), Scottish cricketer
• David Cowan (entrepreneur), U.S. venture capitalist and entrepreneur
• David Cowan (footballer, born 1982), English footballer
• David Cowan (footballer, born 1910), Scottish footballer
• David Cowan (politician), Scottish naval officer and politician in Upper Canada
• David Tennant Cowan, British Indian Army officer