EDTF may refer to:
e-Learning Developers’ Task Force, predecessor of E-Learning Developers' Community of Practice (ELCoP) EVA Development Flight Tests (EDTF-5), of STS-80 Exam Development Task Forces, of the American Registry for Diagnostic Medical Sonography Extended Date Time Format, a type of extended date formats added to ISO 8601 in 2019 Freiburg Airport, Baden-Württemberg, Germany