Mirjam has extensive experience acting as counsel in commercial and investment treaty arbitrations under a range of arbitration rules, including ICC, LCIA, UNCITRAL, ICSID and NAI Rules. She also regularly acts in complex and high-value proceedings before the Dutch courts concerning the setting aside and enforcement of arbitral awards, particularly in disputes involving bilateral and multilateral investment treaties.

Mirjam serves as president of the Dutch Arbitration Association (DAA). She is also a delegate to the ICC Commission on Arbitration and ADR to represent ICC Netherlands and a member of the Executive Board of the International Federation of Investment Law and Arbitration (IFILA).

In addition, Mirjam sits as arbitrator. Mirjam publishes frequently on topics of arbitration and procedural law and is a co-author of the standard textbook in the Netherlands on the Dutch Code of Civil Procedure.

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Memberships

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Dutch Bar Association (2001)
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President of the Dutch Arbitration Association
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Delegate to the ICC Commission on Arbitration and ADR
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Executive Board of the European Federation for Investment Law and Arbitration
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Executive Board of the International Federation for Investment Law and Arbitration
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Qualifications

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Dutch law, Leiden University, 2000 (with honors)
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Institut de Sciences Politiques (Paris, France), 1996
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University of British Columbia (Vancouver, Canada), 1999

What others say

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"Your case is in good hands with her."
Chambers and Partners - Global Guide (2026)
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"Mirjam van de Hel-Koedoot is sharp and on the ball."
Chambers and Partners - Global Guide (2026)
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"Her profound knowledge of the law, her procedural creativity and her command of the case make for a nearly unbeatable combination."
Chambers and Partners - Global Guide (2026)
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Tom Claassens and Mirjam van de Hel are both knowledgeable, with plenty of experience and are a pleasure to work with.
Legal 500 - EMEA (2026)
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Mirjam van de Hel is a great hire for Loyens & Loeff. She is a leading arbitration practitioner. She has an outstanding knowledge of the law and is also very good with clients. She's a great person!
Legal 500 - EMEA (2026)
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Mirjam van de Hel-Koedoot is a recent and valuable addition to this firm's team. She is an outstanding lawyer and well respected in the arbitration community.
Legal 500 - EMEA (2026)
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"She is very strong in enforcement cases."
Chambers & Partners - High Net Worth (2025)
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"Mirjam van de Hel-Koedoot is a sophisticated lawyer who is capable of putting legal points forward based upon precise analysis of the case."
Chambers & Partners - High Net Worth (2025)
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"Mirjam van de Hel-Koedoot has very good commercial sense and is very practical."
Chambers & Partners - High Net Worth (2025)
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"She is very strong in enforcement cases."
Chambers & Partners - Global (2025)
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"Mirjam van de Hel-Koedoot is a sophisticated lawyer who is capable of putting legal points forward based upon precise analysis of the case."
Chambers & Partners - Global (2025)
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"Mirjam van de Hel-Koedoot has very good commercial sense and is very practical."
Chambers & Partners - Global (2025)
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"Mirjam van de Hel-Koedoot is a key contact in complex international matters."
Chambers & Partners - High Net Worth (2025)
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Mirjam van de Hel - Koedoot

Partner - Attorney at Law

Mirjam.van.de.Hel@loyensloeff.com

Amsterdam

English, Dutch

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<p>Mirjam van de Hel – Koedoot is Partner in the Litigation & Risk Management team in our Amsterdam office. She specialises in international commercial and investment arbitration and arbitration-related court litigation.</p>

Mirjam has extensive experience acting as counsel in commercial and investment treaty arbitrations under a range of arbitration rules, including ICC, LCIA, UNCITRAL, ICSID and NAI Rules. She also regularly acts in complex and high-value proceedings before the Dutch courts concerning the setting aside and enforcement of arbitral awards, particularly in disputes involving bilateral and multilateral investment treaties.

Mirjam serves as president of the Dutch Arbitration Association (DAA). She is also a delegate to the ICC Commission on Arbitration and ADR to represent ICC Netherlands and a member of the Executive Board of the International Federation of Investment Law and Arbitration (IFILA).

In addition, Mirjam sits as arbitrator. Mirjam publishes frequently on topics of arbitration and procedural law and is a co-author of the standard textbook in the Netherlands on the Dutch Code of Civil Procedure.