Membership of the IOP is for anyone with an interest in physics, and of 55,000 members, more than 20% are based outside the UK and Ireland.

They are entitled to all the same member benefits – a subscription to Physics World magazine, access to IOPP Publishing's journals, preferential registration rates for IOP conferences, free online courses and the option to join our 50 special-interest groups.

Joining the IOP will allow you to expand your knowledge, develop your networks and enhance your professional reputation. For more information, including a list of benefits for each membership grade, please visit

The IOP also works for our international members more directly by encouraging and supporting them by enabling networking and collaboration with like-minded physicists in their regions. For more information on how we support members outside of the UK and Ireland, email