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Tomas is one of Norway’s most experienced sports lawyers. His practice is focused on the following areas:


  • Commercial matters (marketing agreements, collaboration agreements, athlete contracts, agent contracts, transfer agreements, etc.)

  • Events/championships (Olympics, World Championships, European Championships, etc.)

  • Development of regulations, guidelines, and rights structures

  • Company establishment and organizational methods/structure

  • Dispute resolution (both nationally and internationally)

  • General advice within the specified fields of law of the firm



2002 – present:

Founder/partner at the law firm Kleven & Kristensen DA


1997 – 2002:

Associate / Managing Associate (corporate/finance) at the law firm Thommessen



Cand. Jur (Master of Laws), University of Oslo


Positions and affiliations:

2013 – 2021:

Board member of the Norwegian School of Sport Sciences (Norges Idrettshøgskole)


2017 – present:

Board member of Nordberg Tennis Club



Author of articles in Idrett & Juss, 5th edition (Universitetsforlaget), 2022



Football, cross-country skiing, and tennis/padel.

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