Ashique Rahman > Fietta LLP > London, England > Lawyer Profile

Fietta LLP


Ashique is an Australian lawyer and Partner at Fietta LLP. Ashique represents States and foreign investors in their public international law disputes, including disputes under international investment agreements.  The Legal 500 has recognised Ashique as a “Rising Star” in public international law.  He was included in the inaugural Lawdragon Global Litigation 500 for his expertise in public international law and was named a “Future Leader” in the Who’s Who Legal guide for international arbitration.  Clients praise Ashique for understanding “key issues” in “complex investment treaty claims” and for his ability to “turn around high quality work product very swiftly”.

Ashique has managed teams of lawyers, witnesses and experts in complex, high-value arbitrations under the ICSID, ICC, LCIA, SCC and UNCITRAL Rules, including some of the most high-profile investor-State arbitrations of the past decade (e.g., Libananco v. Turkey, Koch v. Venezuela).  He also counsels on post-award remedies, including recognition and enforcement of foreign arbitral awards.   Ashique is presently representing a European State in a treaty dispute with a foreign investor, a US oil company in a treaty dispute with Kazakhstan, and hundreds of foreign investors in an ICSID, multi-party arbitration against Cyprus.

Ashique also advises States, international organisations and multinational companies on a broad range of public international law topics, including the law of the sea, the law of treaties, jurisdictional immunities and the protection of foreign investments. He writes regularly on these topics and recently co-authored a peer-reviewed chapter on juridical persons and the requirements of the ICSID Convention.  He has taught at University College London and has delivered practical training in public international law and international arbitration to Ministry officials of States in the Middle East and Asia.

Prior to joining Fietta LLP, Ashique was a senior lawyer at a public international law firm in London, where he worked with Stephen Fietta and other members of the Fietta team over a number of years. He is also a founding board member of the Young Public International Law Group, a network of public international law practitioners from law firms, the bar, international organisations, governments and academic institutions around the world. Ashique is presently serving as the Asian International Arbitration Centre’s Young Practitioners’ Group’s representative for Europe.


Fietta LLP, Partner (2022 onwards) counsel (2018-2022), senior associate (2016-2018); Volterra Fietta, associate (2011-2016); University of Sydney, research assistant in public international law and investment treaty arbitration (2010-2011); Ernst & Young, consultant in the Energy and Utilities Group (2007-2008)


English (native), Bengali (conversational)


LLM in Public International Law (2010), University of Sydney

Admitted as a Lawyer of the Supreme Court of New South Wales, Australia (2009)

LLB (2006), University of Sydney

BSC (2003), University of New South Wales

Lawyer Rankings

London > Dispute resolution > Public international law

(Rising stars)

Ashique RahmanFietta LLP

The strongest PIL boutique in London‘, Fietta LLP has ‘vast experience in PIL matters‘. Dedicated to PIL and international arbitration work, the practice is routinely instructed by sovereign clients in their most sensitive PIL matters globally; and in contentious work, the team represents both investors and respondent states in investment arbitration. With ‘remarkable knowledge of PIL‘, founding partner Stephen Fietta KC regularly acts for sovereign states in high-profile territorial disputes; and Jiries Saadeh, ‘an absolute star of his generation‘, represents state and investor clients in international investment treaty cases. At counsel level, Australian lawyer Ashique Rahman is a founding board member of the Young Public International Law Group, a network of PIL practitioners; and Laura Rees-Evans and Oonagh Sands also both assist with complex PIL issues.

London > Dispute resolution > International arbitration

Boutique law firm Fietta LLP houses a dedicated international arbitration and public international law (PIL) practice that is widely respected for its investment disputes credentials. The ‘strategicStephen Fietta KC is regularly instructed by sovereign states to act in highly sensitive PIL matters, including some of the world’s highest profile territorial claims; and Jiries Saadehhas vast experience in investment disputes‘. Ashique Rahman is a partner as of July 2022, while Laura Rees-Evans and Oonagh Sands are the counsels to note.