| Acronym | Definition |
|---|
| ETAP | Environmental Technologies Action Plan (EU) |
| ETAP | Exercise-Related Transient Abdominal Pain (ailment) |
| ETAP | Electronic Teaching Assistance Program |
| ETAP | European Technology Acquisition Programme |
| ETAP | Entreprise Tunisienne des Activites Petrolieres |
| ETAP | Entrepreneurial Technology Apprenticeship Program |
| ETAP | Estándares Tecnológicos para la Administración Pública (Spanish: Technology Standards for Public Administration; Argentina) |
| ETAP | Expanded Technical Assistance Program |
| ETAP | Educational Telecommunications Access Program (Wisconsin) |
| ETAP | Education, Training, & Awareness Program |
| ETAP | ELINT Technical Analysis Position |
| ETAP | Engineering Technical Acquisition Project |
| ETAP | Elevated Temperature Aluminum Program |
| ETAP | Electrical Transient and Analysis Program (software program for electrical engineers) |
| ETAP | Escuela Técnica de Audio Profesional (Spanish: Audio Professional Technical School; various locations) |