Posted in Aviation, Information Technology, Internet Slang, Organizations, Science DUL stands for Duluth (Amtrak station code; Duluth, MN) DUL stands for Dial-up User List DUL stands for Documentation Unit Leader (various organizations) DUL stands for Dynamic User List DUL stands for Drained Upper Limit (soil drainage) DUL stands for Dial-Up Line (network access point via dial-up telephone/DSL lines)