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Callum O'Connor



OConnor Callum
Callum O'Connor



Callum is a counsel in our Litigation, Arbitration and Dispute Resolution practice in our Johannesburg office. He has experience in high value and complex commercial disputes both in South Africa and globally. Callum has advised on a broad spectrum of matters involving a cross section of notable clients, with a strong emphasis on asset tracing and fraud claims, compliance and investigations, restructuring and insolvency litigation and class actions.

Callum has been involved in various cross-border proceedings, as lead and co-lead counsel in multijurisdictional anti-bribery and corruption investigations and fraud and asset tracing claims.

Callum is listed as a Next Generation Lawyer by the Legal 500, EMEA 2017.

Key practice areas:

Anti-Bribery and Corruption

Litigation, Arbitration and Dispute Resolution

Financial Services Regulation and Investigations

Financial Institutions

Restructuring (including Insolvency)

News & insights

Sun peering behind modern skyscrapers on the skyline

Publications: 29 JULY 2021

Lukas Rengier and Fabian Kolf contribute chapters to Lexology's Private Antitrust Litigation 2022

Lukas Rengier and Fabian Kolf, members of our global antitrust team based in Hamburg, have contributed two chapters to the latest (2022) edition of Lexology Getting The Deal Through's Private…

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sun casting shadow on building wall

Publications: 28 JULY 2021

Hong Kong’s Securities and Futures Commission’s recent regulatory enforcement trends

Hong Kong’s Securities and Futures Commission (SFC) has recently published its annual report for the period dated April 2020 to March 2021 (the 2020/2021 Period). The report takes a look back at the…

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High rise buildings with sun reflecting

Publications: 27 JULY 2021

The Market Abuse Regulation: the First Five Years

This month marks five years since the Market Abuse Regulation (596/2014/EU) (EU MAR), which has recently been retained into UK law following the expiry of the Brexit transition period (UK MAR), came…

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Allen & Overy office

News: 26 JULY 2021

Allen & Overy announces the nomination of Laurie-Anne Ancenys as Young Leader of the France China Foundation

Allen & Overy announces the nomination of Laurie-Anne Ancenys, Counsel and Head of the Tech & Data practice of the Paris office, to the 2021 selection of the Young Leaders of the France China…

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Allen & Overy (South Africa) LLP
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Attorney (South Africa) 2010


Money Laundering Control, University of Johannesburg, 2015

Advanced Company Law I & II, Advanced Contract Law, Advanced Administrative Law, Nelson Mandela Institute of the School of Law, 2010 – 2011

LLB, University of the Witwatersrand, 2008

B. Soc. Sci. Politics, Philosophy, Politics and Economics (PPE), University of Cape Town, 2005