Professionals Australia is a trade Union. It was formerly known as the Association of Professional Engineers, Scientists and Managers Australia (APESMA). Today, Professionals Australia represents more than 25,000 employees and students located across Australia.

​

Membership consists of engineers, scientists, managers, architects, IT professionals, contractors, consultants, pharmacists, veterinarians, surveyors, interpreters, translators and collieries staff in addition to student members.