Sanction law defence advocacy offers a professional counterbalance for

the powers of the authorities. Our services cover corporate criminal law,

tax litigation, penal administrative law, Supreme Court & other special

and international criminal law.


January 26, 2022

Joost Nan appointed as Professor of Criminal (Procedural) Law

As of 1 January 2022, Joost Nan is appointed as Professor of Criminal (Procedural) Law (0.2 fte) at Erasmus School of Law for a period …

Read more


Studio Lindengracht Amsterdam | 09:00-19:30

specialisatieopleiding Fiscale Advocatuur

Sep 23

Léon de Jager en Frans Sijbers verzorgen de module fiscaal straf- en boeterecht II tijdens de door de NVAB georganiseerde specialisatieopleiding Fiscale Advocatuur.  

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The firm

Wladimiroff stands out from other law firms. This boutique ranks among the absolute top of legal professionals in the Netherlands handling issues of financial, economic and tax law. Since 1976 the firm has committed itself to these complex areas of law. Other lawyers in the Netherlands and abroad refer their clients and relations to Wladimiroff on a regular basis.


The firm was established on 1 September 1976 by Mischa Wladimiroff and Gerard Spong. This establishment was done under the auspices of the Foundation Criminal law Practice which itself was set up by the Dutch Bar in order to enhance the quality of criminal law assistance. The aim was to provide high quality and specialised assistance in criminal cases and by doing that form a hallmark for the criminal bar. The firm, which gradually expanded, excelled in doing that. Gerard Spong inter alia became known a Supreme Court specialist. He eventually left the firm in 2000 to continue his practice in Amsterdam. Given his involvement in landmark cases Mischa Wladimiroff was installed in 1986 a professor of economic criminal law (focusing on white collar crime). From the mid-90s Wladimiroff, whose family had fled from Russian Communist terror during the Russian Revolution, became involved, together with other lawyers from the firm, in the development of international criminal law. International criminal law was then shaped again for the first time since the second World War. Meanwhile the practice in white collar cases also flourished, in part due to an uprise in enforcement. The firm was strengthened in that field by more partners and more specialisms. From 2005 the special field of sanction law developed in which all the sanctioning and enforcement of government authorities and agencies comes together. The firm has a unique position in assisting its clients in all the fields that combine into sanction law.

Specialist assistance

The corporate world is increasingly complex. Entrepreneurs, directors and professionals have to tread carefully. Regulators, investigative services and justice may respond fiercely to violations of the rules. Government inquiries can have drastic consequences, which commonly include damage to the (reputation of the) entrepreneur or director. In those cases Wladimiroff offers assistance and tailor-made advice. Capably, comprehensively and confidentially.


The firm is unique for its expansive team of specialists experienced in all areas of sanctions law: (international) corruption or fraud inquiries by the public prosecution service, complex fiscal issues, enforcement by AFM [Authority for Financial Markets] or ACM [Authority for Consumers & Markets] or investigations into environmental offences. Regulators and enforcers consider Wladimiroff a formidable opponent.


Wladimiroff offers hands-on assistance of the highest standard. Comprehensive counsel in inquiries will prevent the improper use of confidential information, or the disregarding of a right to silence. A solid defence can preclude painful measures or penalties and minimise (reputational) damage. Advice tailored to a specific organization or a specialized course for staff contributes to compliance, reducing the risk of unpleasant investigations and harmful litigation.


Wladimiroff is well aware that the interests at stake are sensitive and that publicity is unwelcome and harmful. The firm's specialists work discreetly, and will seek out of court settlements. If a case is already in the public eye, Wladimiroff works with the client's PR officers or specialised agencies to handle the media. This makes Wladimiroff as often as not the first choice for companies, directors and professionals in delicate cases.