Mario Di Stefano

Mario Di Stefano is the Founding and Managing Partner of DSM Avocats à la Cour, a leading full-service business law firm based in Luxembourg. With a career spanning over 25 years in the legal field, Mario is recognized for his expertise in Commercial and Corporate Law, M&A, Real Estate, Tax, and Labor Law. He is a member of the Bars of Luxembourg (Grand Duchy of Luxembourg) and Frankfurt am Main (Germany).
In 2004, Mario founded DSM Avocats à la Cour, which has since grown to become one of Luxembourg's most reputable independent Luxembourg business law firms, boasting a team of over 40 dedicated lawyers and staff.
Mario's dedication to delivering exceptional legal services has earned him recognition and accolades from leading legal directories. Legal500 has praised DSM Avocats à la Cour as a “domestic firm offering top-quality work” and Mario Di Stefano as a lawyer who "displays exceptional communication skills" and provides "timely and business-minded advice." Chambers has hailed him as an "absolute specialist" who is "solution-oriented" and "always available" with a "detail-oriented approach." WorldTax has commended his team's "very good work" and responsiveness.


Mario is actively involved in numerous professional organizations and legal networks. He serves as the President of AmCham Luxembourg’s Real Estate Committee and is a member of esteemed bodies such as LuxReal and the Luxembourg Arbitration Association, among others. Mario's firm is a member of five global legal networks, enhancing the ability of the firm to serve clients.


Mario Di Stefano is an author and speaker on legal topics, frequently contributing articles and insights to publications such as NeoMag and AGEFI Luxembourg.


With fluency in five languages, including English, French, German, Italian, and Luxembourgish, Mario ensures seamless communication with clients from diverse backgrounds.


Mario Di Stefano's passion for law, combined with his dedication to excellence, makes him a trusted advisor to national and international clients.