David Long

David Long may refer to:
 * David Long (New Zealand musician), New Zealand musician and composer
 * Dave Long (runner) (born 1960), former long-distance runner from Great Britain
 * Dave Long (American football) (born 1944), American football defensive lineman
 * David Long (defensive back) (born 1998), American football defensive back (2018 All Big Ten first team)
 * David Long Jr., American football linebacker (2018 Big 12 defensive player of the year)
 * David Long (mandolin player) (born 1975), mandolin player from Nashville, Tennessee
 * David C. Long (born 1955), Indiana state senator
 * David H. Long (born 1961), American businessman
 * David Martin Long (1953–1999), American murderer
 * David Ryan Long, author