David Long

• David Long (New [Zealand musician)], New Zealand musician and composer
• Dave Long (runner), former long-distance runner from Great Britain
• Dave Long (American football), American football defensive lineman
• David Long (defensive back), also called David Long Jr., American football cornerback
• David Long Jr. (linebacker), American football linebacker
• David Long (mandolin player), mandolin player from Nashville, Tennessee
• David C. Long, Indiana state senator
• David H. Long, American businessman
• David Martin Long, American murderer
• David P. Long, American educator and canon lawyer
• David Ryan Long, author