ODL

ODL may refer to:


 * Observations of daily living, cues that people attend to in the course of their everyday life, that inform them about their health
 * Oklahoma Department of Libraries, the state library for the U.S. state of Oklahoma
 * Open and distance learning, gratis distance education
 * Ordnance Datum Liverpool, an ordnance datum recorded at Victoria Dock in Liverpool, England
 * OpenDaylight Project, an software-defined networking (SDN) controller