Tom Claassens
Partner - Attorney at law

Tom Claassens

Tom Claassens is a partner in Loyens & Loeff’s Litigation & Risk Management practice group.

About Tom Claassens

Tom has represented clients in a broad range of disputes both in arbitrations proceedings (including ICC, UNCITRAL, SIAC and NAI) and in proceedings before Dutch state courts (courts of first instance and courts of appeal) as well as the courts of the Netherlands Antilles.

What others say about Tom

Chambers Global: ''According to sources, Tom Claassens is "first rate, intelligent and diligent." He acts for clients on arbitration proceedings following corporate transactions, joint ventures and arbitral award annulment procedures. His clients include multinational corporations and state governments.'' (2020)

Chambers Europe:
 "Tom Claassens has experience in commercial litigation and is increasingly focused on international arbitration. He is described as 'incredibly client-focused and smart' as well as a 'strategic thinker who comes up with creative arguments'." (2019)

Chambers Global: "Sources say: 'He is a fantastic lawyer: smart, effective, advises clients well, writes well and also speaks well in court'." (2018)

Legal 500: "According to clients, Loyens & Loeff’s team is ‘responsive, thorough, hardworking and a pleasure to work with’, and has significant experience representing international clients in International Chamber of Commerce proceedings. It is led by the ‘very detailed, thorough’ Tom Claassens, who is ‘an authority on Dutch civil procedure’ and 'a name to note'." (2018)

Mr Claassens is also listed in Who's Who Legal: Litigation 2018 among only 16 Dutch litigation peers.


  • New York State Bar Association
  • American Bar Association
  • International Bar Association


  • Southern Methodist University Summer Program (Dallas, Texas), 1998
  • Dutch Law, University of Leiden, 1991 (with honors)


  • Dutch
  • English
  • German

T: +31 10 224 66 13