Harriet Lenigas
Date of admission to the Bar
2019
Background
Harriet has fifteen years’ experience advising and appearing in large scale, high value cross-border commercial disputes. She has appeared in ICC, LCIA, LMAA, HKIAC and UNCITRAL arbitrations in London, New York, Hong Kong and Australia. With a broad national practice, appearing in important proceedings throughout Australia in the Federal and Supreme Courts, Harriet accepts briefs in all areas of commercial law. Harriet also has significant experience in major construction, infrastructure and energy disputes and class actions. Most recently, Harriet has been appearing for INPEX Operations Ltd in its long running, multi-billion dollar claims against Akzo Nobel entities in the Federal Court and against various insurers in the WA Supreme Court regarding the Ichthys LNG Project.
Harriet has been recognised in the Legal 500 Asia Pacific edition (2025 and 2026) as one of the leading junior counsel in construction, infrastructure and property in Australia (Band 1) and in commercial disputes in Australia (Band 2) with the following commentary:
‘Harriet has exceptional knowledge of construction contracts and construction disputes. She is tactically brilliant and her endurance is second to none’.
‘Harriet is an excellent construction/infrastructure barrister. Her strengths are the law, and ensuring matters are well prepared for hearing to achieve the best possible outcome.’
‘Harriet is a safe pair of hands – knows construction and always provides on point advice’.
‘Harriet is extremely hard working and will not rest until deadlines are complied with. She has a receptive manner. She produces written work of a high quality’.
Harriet was also recognised as one of the leading arbitration junior counsel in Australia by Doyle’s Guide in 2023, 2024 and 2025.
Prior to being called to the Bar, Harriet was a Senior Associate at Ashurst, where she instructed in international arbitrations and significant Australian court proceedings.
Harriet was also the associate to the Hon L. G. Foster in the Federal Court of Australia.