Yes, many Australian universities offer trimester academic systems, though not all. The trimester (or three-term) system divides the academic year into three teaching periods instead of the traditional two-semester system. This allows students to:

- Finish their degrees faster by studying across all three terms in a year.
- Have more flexibility with their course load and breaks.
- Choose to take one or more trimesters off if needed, without delaying their graduation as much.

Popular Australian universities with trimester systems include:
- Bond University (uses trimesters for all programs)
- University of New South Wales (UNSW) (uses a trimester, called the “UNSW 3+” calendar, for many programs)
- Deakin University
- Griffith University
- University of Newcastle (for some programs)

Other universities may offer a mix of semesters and trimesters depending on the course or faculty.

Key Points:
- Not all programs or universities use the trimester system.
- Trimester systems can help international students finish qualifications faster.
- Always check the academic calendar of your chosen university and course.

If you want to know whether a specific university or course in Australia uses the trimester system, please let me know, and I can provide more detailed information!