Mr Halldor Brynjar Halldorsson > LOGOS > Reykjavik, Iceland > Lawyer Profile


Work Department

Partner - Corporate


Main practice areas are administrative and development law, competition law, corporate law, European law, financial restructuring and insolvency, litigation and arbitration, and M&A.


Halldor joined LOGOS as a Trainee in 2007, became an Associate in 2009, a Senior Associate in 2012 and Partner in 2019.


English and Danish.


The Icelandic Bar Association.


Halldor graduated from the Reykjavik University with a mag.jur degree in 2009, Kings College in London with a Master’s degree in European Competition law in 2017, qualified as an Attorney in 2010 and a Supreme Court Attorney in 2017.

Lawyer Rankings

Iceland > Dispute resolution

(Next Generation Partners)

Halldór Brynjar HalldórssonLOGOS

Led by company law expert Heiðar Ásberg Atlason, the dispute resolution practice at LOGOS also features EEA and competition specialist Helga Óttarsdóttir as well as experienced litigators Ólafur Eiríksson and Halldór Brynjar Halldórsson. Covering both Iceland and the UK, the team has substantive experience before the Supreme Court, the Court of Appeal, EFTA and the European Court of Human Rights. In particular, the group regularly defends clients in large-scale investigations brought by the tax or competition authorities and bankruptcy claims; it recently advised HSBC on the collapse of LBI and the domestic legal requirements of a cross-border winding-up. The practice attracts a significant amount of work from key players in the banking, telecoms, retail and shipping sectors.

Iceland > EEA and competition

(Next Generation Partners)

Halldór Brynjar HalldórssonLOGOS legal services

Advising domestic and international clients in the retail, telecoms and fishing sectors, the EEA and competition team at LOGOS legal services is jointly led by Helga Melkorka Óttarsdóttir and Gunnar Sturluson. The group handles key issues including mergers, market dominance allegations and unlawful cooperation of undertakings cases, and advises on dawn raids, horizontal and vertical agreements, state aid work and private enforcements. In a notable highlight, the team secured a partial annulment of a fine given to Norvik and Byko relating to allegations of cartel behaviour. Halldór Brynjar Halldórsson is a key contact for competition litigation.