Posted in Business & Finance, Internet Slang, Organizations ADAN stands for All Day All Night ADAN stands for Associazione Degli Albergatori Napoletani (Italian: Neopolitan Hoteliers Association; Naples, Italy) ADAN Share Pinterest Tweet Whatsapp Post navigation ADAMTS-1ADAND Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.