ISIC is a four-letter acronym that may stand for:
- Information Music (an R&D project under the auspices of the Telecommunications Technology program at Sheridan College in Oakville, Ontario).
- International Standard Industrial Classification
- International Student Identity Card
- Immediate Superior in Command (military acronym)
- IP Stack Integrity Checker is a suite of utilities to exercise the stability of an IP Stack and its component stacks (TCP, UDP, ICMP et al.) It generates piles of pseudo random packets of the target protocol. The packets be given tendencies to conform to. Ie 50% of the packets generated can have IP Options. 25% of the packets can be IP fragments... But the percentages are arbitrary and most of the packet fields have a configurable tendency.
- International Space Innovation Centre, Harwell