David Long may refer to:David Long, New Zealand musician and composer Dave Long (runner), former long-distance runner from Great Britain Dave Long, American football defensive lineman David Long, also called David Long Jr., American football cornerback David Long Jr. (linebacker), American football linebacker David Long, mandolin player from Nashville, Tennessee David C. Long, Indiana state senator David H. Long, American businessman David Martin Long (1953–1999), American murderer David P. Long, American educator and canon lawyer David Ryan Long, author