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Tõnis Tamme

Attorney at Law

Tõnis is one of the most experienced transactional lawyers in Estonia having specialized in M&A, Private Equity, Project Finance and related Corporate & Commercial matters for more than 25 years. The particular focus of his legal practise is on transport, infrastructure, shipping and aviation matters. He is the co-head of the Transport & Infrastructure practice group of the firm.

Tõnis has been ranked as a leading and recommended professional by Chambers Global and Legal500 in the fields of M&A, banking & finance and real estate law. Clients and peers alike highly appreciate his professional ethical standards, negotiation skills and experience as well as his business-minded approach to the practice of law. He has been repeatedly elected to the Court of Honour of the Estonian Bar Association, has been appointed as the Honorary Consul of the Republic of Slovenia in Estonia and serves as a board member of the Rail Baltica Business Network Estonia.

Tõnis has advised more than 200 notable transactions in the Baltic market such as:

  • Advising the Estonian national airline Nordica in the acquisition of the shares of Regional Jet (Xfly) from the Polish national carrier LOT Polskie Linie Lotnicze
  • Representing Transpordi Varahaldus – an Estonian state-owned aviation asset company, in the acquisition and lease-back of 7 Bombardier CRJ900 passenger aircraft
  • Lead partner of an international consortium PROXIMARE advising the European Commission in the TEN-T North Sea – Baltic Core Network Corridor Study
  • Negotiations between the governments of Estonia, Latvia and Lithuania of the Shareholders Agreement of the Rail Baltica joint venture for the construction of the new high-speed railway from Tallinn, Estonia to the LT/PL border (estimated construction cost EUR 6,5 billion)
  • Advising the Estonian Police and Border Guard Board in the new-building of the multi-purpose m/v Kindral Kurvits at the shipyards of Riga, Latvia and Uusikaupunki, Finland;
  • Purchase of majority shares of the national airline Estonian Air by the Republic of Estonia from a leading European Airlines SAS;
  • Privatization of Estonian Railways, the following reorganization and everyday legal advice for the largest Estonian railway company and the consequent sale-back of the company to the Estonian government;
  • Sale of largest shopping centres in the Estonian capital Tallinn – Rocca al Mare, Sikupilli and on Peterburi road.

Professional experience

2010 – Partner at TRINITI in Tallinn, Estonia
2004 – 2010 Founder and managing partner of Tamme & Otsmann
1994 – 2004 Attorney and senior associate at Teder & Rask
1995 Practice placement at Essex Court Chambers, London, England


Estonian Military Academy Battalion Staff Officer Course, 2018-2019
Faculty of Law at the University of Tartu, Estonia 1990-1994
United Kingdom Central European Legal Scholarship Scheme (UKCELS) at the Queen Mary and Westfield College, University of London, 1995


Participation in drafting the bills of the National Opera Act, the Taxi Services Act, the Broadcasting Act and the Bar Association Act.

Professional memberships

The Estonian Reserve Officers’ Association, member since 2020.


Court of Honour of the Estonian Bar Association, member since 2016.


Board Member of Rail Baltica Business Network Estonia since 2015.


Court of Honour of the Estonian Bar Association, substitute member, 2013-2016.


Ethics Committee of the Estonian Bar Association, member, 2001-2017.


Board Member and Vice-Chairman of the British-Estonian Chamber of Commerce 2011-2014.


Founding member of the Estonian Young Bar Association, 1995.


Member of the Estonian Bar Association since 1994.


Member of the Estonian Ministry of Communications workgroup for drafting the bill of the Act of Registered Security over Movables Established over Vehicles.

Recent experience
Recent news

TRINITI hands over draft Nuclear Energy and Safety Act to the Ministry of Climate

December 5, 2023

Analysis of the regulatory framework for the deployment of nuclear energy completed

June 2, 2023

Legal500 puts TRINITI among the best law firms in Estonia and deems the specialists of TRINITI to be crème de la crème of Estonian attorneys

April 14, 2023

CHAMBERS once again cements TRINITI’s position among the best Estonian law firms

March 29, 2023

TRINITI Baltic Energy Practice Group Meeting

January 24, 2023

TRINITI to update the draft Estonian nuclear law

November 9, 2022

Rail Baltica Business Network at the Estonian Parliament

May 13, 2022

Rail Baltica to open in 2030

December 10, 2021

TRINITI advises Krakul in its acquisition by Bercman Technologies

November 23, 2021

LHV refinanced the bonds of the largest Estonian aviation assetco

November 4, 2021

TRINITI Partner Elected to the Bar Association’s Court of Honour

March 31, 2021

Nordica acquired full ownership of Xfly from Polish LOT

January 5, 2021

TRINITI advised the sale of the largest manufacturer of hooklift containers in Northern Europe

January 16, 2020

TRINITI advised Utilitas, the largest district heating company of Estonia, in capital raising

February 18, 2019

TRINITI advised TVH in a 10 MEUR bond issue and aircraft acquisition

January 10, 2019

Risk analysis for the Estonian part of Rail Baltica completed

November 21, 2017

TRINITI advising the largest commercial investment into Estonian aviation

April 24, 2017

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