COSA is the national oncology community bringing together multidisciplinary health professionals across all cancers to advance care and improve outcomes.
As a COSA member, you will have opportunities to connect with oncology leaders, build networks and collaborations, access professional development and education, drive advocacy, and facilitate research.
COSA membership is open to healthcare professionals who have an interest in oncology relevant to the vision and mission of COSA. You are eligible for COSA membership if you hold a professional qualification, are working in healthcare or research, and devote a majority of your professional activity to cancer care and/or research.
Members of COSA Affiliated or Associated organisations are eligible for a discounted membership rate on selected individual membership types.
Membership is valid from 1 July to 30 June each year. Membership fees are GST inclusive. We accept Visa and Mastercard for payment.
If you are unsure which member type is right for you, please contact us.

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2025 COSA membership
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Individual
Memberships

Medical Member
This membership is for qualified clinical practitioners with a specific interest in oncology. Medical members hold a postgraduate degree or fellowship from a recognised College or Society, eg medical or radiation oncologists, surgeons, general practitioners etc.
- $310 / year
- $280 / year (Affiliated/Associated Medical Member rate)
Allied Health Member
This membership is for health professionals or non-medical professionals with a specific interest in cancer care, eg exercise physiologists, physiotherapists, pharmacists, psychologists, nutritionist/dietitians, radiation therapists, non-clinical administrative staff etc.
- $175 / year
- $150 / year (Affiliated/Associated Allied Health Member rate)

Nursing Member
This membership is for registered nurses with a specific interest in oncology, eg breast care nurses, clinical nurse consultants, nurse practitioners etc.
- $175 / year
- $150 / year (Affiliated/Associated Nursing Member rate)

Advanced Trainee Member
This membership is for doctors in specialty training with a specific interest in cancer care, who are eligible for this membership rate for the duration of their training, eg trainees in medical, radiation and surgical oncology.
- $175 / year
- $150 / year (Affiliated/Associated Advanced Trainee Member rate)
Student Member
A person who is undertaking undergraduate or postgraduate studies with a focus on cancer care in an Australian educational institution is eligible as a student member. Students must indicate an expected completion date on application and COSA may request documented evidence of student enrolment periodically.
- $50 / year
Retiree Member
A person who has retired from professional employment, has held COSA membership for 10 years prior to retirement, and has a continued personal interest in cancer care is eligible as a retiree member, subject to Board approval.
Please contact COSA cosa@cancer.org.au to enquire about Retiree Membership.
- $85 / year
Honorary Member
A person who has made significant and sustained contributions to COSA or to cancer care in general is eligible for admission as an Honorary Member. This membership category is offered to past Presidents of COSA and nominees and must be approved by the COSA Board.
Affiliated and Associated
Organisations
Interested in organisational membership?
Affiliated and Associated Organisations include not-for-profit companies, institutions or organisations that have a similar vision to COSA.
If your organisation is interested in becoming an Affiliated or Associated member of COSA visit the Member Organisations page for more information.
Member OrganisationsJoin Australia's leading oncology community & make an impact
Become a COSA memberTwitter
@COSAoncology
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COSAoncology 20 hours ago
Thank you @POCOG1 for maintaining Affiliated membership with COSA. PoCoG members get a discount for COSA membership, and might be interested in attending COSA-IPOS 2025 – COSA members also make a saving on registration! bit.ly/3hXsDLm
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COSAoncology yesterday
COSA is pleased to endorse the Survivorship Care for People Affected by Advanced or Metastatic Cancer: MASCC-ASCO Standards and Practice Recommendations. bit.ly/44JLN0A Read the endorsement paper from @DrNicolasHart and his co-authors at bit.ly/3GINjIi
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COSAoncology 2 days ago
We are pleased that @MOGA_ORG continue to be an Affiliated member organisation with COSA, and look forward to our ongoing collaboration to improve cancer care and control.MOGA provided their Marryalyan Report for COSA’s June eNews: bit.ly/4kpHz3V
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COSAoncology 6 days ago
Thank you again to @RANZCRcollege for continuing your COSA Affiliated membership. RANZCR members are reminded to take advantage of the Affiliated discount for COSA memberships: bit.ly/3s5mOC6
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COSAoncology 8 days ago
Thanks to @ESSA_NEWS for renewing as a COSA Associated organisation and continuing to collaborate with COSA. A reminder that ESSA members are invited to take advantage of discounted COSA membership: bit.ly/3s5mOC6
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COSAoncology 15 days ago
Our Nutrition Group is hosting a Speed Networking Event on Fri 25 July for COSA members to get to know leading dietitians and researchers including Jane Stewart, Merran Findlay & Emily Jeffery. Connect with COSA members interested in nutrition and cancer! bit.ly/4nmK8GU
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COSAoncology 16 days ago
The Tom Reeve Award recognises a national leader who's made significant contributions to cancer care. The award will be presented at COSA-IPOS 2025 in Adelaide in November where the recipient is invited to deliver an address. Nominations closing 14 July. bit.ly/3hIXWcV
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COSAoncology 20 days ago
Have you renewed your COSA membership yet? You might like to renew before 30 June 2025: bit.ly/4cI0nc3
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COSAoncology 22 days ago
Our June member newsletter is out now. Check your inbox for the latest COSA news and updates including new resources, events, opportunities and peer-reviewed journal articles. Or log in and view it online anytime at bit.ly/4kRIRpp
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COSAoncology 23 days ago
COSA is the national oncology community bringing together multidisciplinary health professionals across all cancers to advance care and improve outcomes. More on member benefits here: bit.ly/3BwXvwL
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