ISSP can refer to:
International Society of Sustainability Professionals (ISSP), non-profit professional association Integrated Single Specialty Provider, health care business model Integrated Soldier System Project, future soldier project in Canada International Social Survey Programme, a collaboration between different nations conducting surveys covering topics which are useful for social science research International Society of Sport Psychology Islamic State – Sahel Province or Islamic State – Somalia Province, branches of the Islamic State In-school suspension, an alternative setting that removes students from the classroom for a period of time, while requiring students to attend school and complete their work Institute for Science, Society and Policy, a multi-disciplinary unit at the University of Ottawa, Canada Inter-Solar System Police, a fictional police agency from the anime Cowboy Bebop In System Serial Programming, a microcontroller programming standard Information Society Service Providers under the EU Electronic Commerce Directive Information Systems Strategy Plan The Institute for Solid State Physics (ISSP), The University of Tokyo