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Tom O'Sullivan
Tom O'Sullivan cover
Tom O'Sullivan

Tom O'Sullivan

Senior Solicitor O'Sullivan Mediation Pty Ltd

location
Sydney, NSW
Click to Reveal Phone Number(+61 2) ..

About Tom

Tom O'Sullivan is a distinguished Senior Solicitor at O'Sullivan Mediation, where he serves as the Principal Mediator. Tom brings extensive expertise in resolving family law, parenting, and property disputes. As a nationally accredited mediator and registered Family Dispute Resolution Practitioner with the Commonwealth Attorney-General's Department, he specialises in mediations that address family provision, contested estate claims, workplace conflicts such as bullying and harassment, and business disputes involving partners and landlords. Tom is committed to helping clients navigate and resolve conflicts efficiently, reducing stress and legal expenses. His practice encompasses face-to-face, online, and telephone mediations both nationally and internationally. His academic credentials include a Bachelor of Laws, Master of Applied Law majoring in Family Law, Bachelor of Commerce, and Master of Commerce. Additionally, he holds a Graduate Diploma in Family Dispute Resolution and a Graduate Diploma in Counselling, further complemented by Advanced Mediation Training with the Australian Institute of Family Law Arbitrators and Mediators. Tom's professional affiliations are extensive. He is an Australian lawyer, a Chartered Tax Advisor with The Tax Institute, a Nationally-Accredited Mediator, and a Registered Family Dispute Resolution Practitioner. He is also an active member of The Law Society of Queensland, The Resolution Institute, and The Tax Institute. His career reflects a dedication to both legal practice and education. At O'Sullivan Legal, Tom focuses on family law, commercial law, tax law, succession law, and estate planning issues, providing clients with effective and affordable legal services. Furthermore, he plays a pivotal role at The Tax Institute as the Course Convenor for the Chartered Tax Adviser program, imparting his technical expertise to future tax professionals. As a lecturer at Macquarie University, Tom inspires postgraduate students in advanced taxation law, enriching their understanding of complex legal issues and policy. Tom's former role as Deputy Head of Content at Wolters Kluwer underscored his ability to lead and communicate intricate regulatory materials, contributing significantly to well-regarded publications such as the Australian Master Tax Guide. Throughout his career, Tom has been recognised for his analytical acumen, collaborative style, and stakeholder management, which have solidified his standing in the legal and education communities.

Practice Areas

Commercial Law
Employment Law
Estate Planning
Family Law

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Resume

Experience

Special Counsel
Special Counsel
O'Sullivan Legal
Dec 2017 - Present · 8 years 7 months
Lecturer
Lecturer
Macquarie University
Feb 2014 - Present · 12 years 5 months
Deputy Head of Content - Tax, Accounting & Superannuation
Deputy Head of Content - Tax, Accounting & Superannuation
Wolters Kluwer
Sep 2012 - Sep 2017 · 5 years
Course Convenor
Course Convenor
The Tax Institute
Jul 2007 - Present · 19 years
Jul 1999 - Aug 2012 · 13 years 1 month

Education

NMAS Mediator (National Mediator Accreditation System), Mediation
NMAS Mediator (National Mediator Accreditation System), Mediation
Resolution Institute
2019
Graduate Diploma of Family Dispute Resolution, Mediation
Graduate Diploma of Family Dispute Resolution, Mediation
Australian Institute of Social Relations
2019
Master of Applied Law, Family Law
Master of Applied Law, Family Law
The College of Law Australia
2018 - 2020
Graduate Certificate in University Learning and Teaching, Higher Education/Higher Education Administration
Graduate Certificate in University Learning and Teaching, Higher Education/Higher Education Administration
UNSW
2002 - 2003
Graduate Diploma in Legal Practice
Graduate Diploma in Legal Practice
The College of Law Australia
2000
Master's Degree, Commerce/ Taxation Law
Master's Degree, Commerce/ Taxation Law
UNSW Business School
1999 - 2003
Bachelor's Degree, Law
Bachelor's Degree, Law
UNSW
1994 - 1998
Bachelor's Degree, Commerce (Marketing Major)
Bachelor's Degree, Commerce (Marketing Major)
UNSW
1994 - 1998

Contact Information

Sydney, NSW

LocationSuite 15, Level 2, 123 Clarence Street, Sydney, NSW
Click to Reveal Phone Number+6128974..
WebsiteView Website

Practice Certificate

Name
Tom O'Sullivan
Date of Admission
2012
Certification type
Principal of a law practice
Class
Law Practice
Region
NSW
CheckLast checked: 20 Jul 2026•
Checked with the Law Society of NSW

Practice Categories

Commercial Law
  • Tax Law
Employment Law
  • Disputes
Estate Planning
  • Disputes
Family Law
  • Mediation
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