Jeff or Jeffrey Long may refer to:
Jeff Long (athletic director) (born 1959), American athletics director Jeff Long (writer) (born 1951), American writer Jeff Long (sheriff), American commissioner Jeffrey Long, American author and researcher on near-death experiences Jeffrey C. Long, American genetic anthropologist Jeffery D. Long, (born 1969), American scholar of religious studies Jeffrey R. Long (born 1969), American inorganic and materials chemist
See also Jeoff Long (born 1941), American former professional baseball player Geoff Long (1929–2023), Australian rules footballer