ISE
- Borsa Istanbul
- Fraunhofer Institute for Solar Energy Systems
- ISE Corporation
- Iceland School of Energy
- Information Sharing Environment
- Initiative for Science in Europe
- Institute for Social Ecology
- International School Eindhoven
- International Securities Exchange
- International Society of Electrochemistry
- International Student Exchange, Ontario
- Ion selective electrode
- Irish Stock Exchange
- Ise (disambiguation)
- Islamabad Stock Exchange
- Islamic Society of Engineers
- Semester at Sea
- Xilinx ISE