The Royal Society of NSW organizes events in Sydney and in its Branches throughout the year. 

In Sydney, these include Ordinary General Meetings (OGMs) held normally at 6.00 for 6.30 pm on the first Wednesday of the month (there is no meeting in January), in the Gallery Room at the State Library of NSW. At the OGMs, society business is conducted, new Fellows and Members are inducted, and reports from Council are given.  This is followed by a public lecture presented by an eminent expert and an optional dinner.  Drinks are served before the meeting.  There is a small charge to attend the meeting and lecture, and to cover refreshments.  The dinner is a separate charge, and must be booked in advance.  All OGMs are open to members of the public.

Since April 2020, during the COVID-19 pandemic, face-to-face meetings have been replaced by virtual meetings, conducted as Zoom webinars, allowing the events program to continue uninterrupted.  It is hoped that face-to-face meetings can be resumed in 2022. 

Other events are held in collaboration with other groups, including:

• The Four Societies lecture — with the Australian Institute of Energy, the Nuclear Panel of Engineers Australia (Sydney Division), and the Australian Nuclear Association
• The Forum — the Australian Academy of Science, with the Australian Academy of Technology and Engineering, the Australian Academy of the Humanities, and the Academy of the Social Sciences in Australia
• The Dirac lecture — with UNSW Sydney and the Australian Institute of Physics
• The Liversidge Medal lecture — with the Royal Australian Chemical Institute