Ioannis Milionis


Ioannis is a Greek-qualified lawyer. He holds a law degree from the National and Kapodistrian University of Athens, Greece. He also holds an LL.M. degree in international law from Leiden University, Netherlands.

He advises States in a wide range of public international law issues, including in the field of international organisations.  He also advises sovereign and private clients in bilateral investment disputes.

Prior to joining Volterra Fietta, he worked for a top-tier Latin American law firm, where he advised sovereign and private clients in investment and commercial arbitration disputes, including in the fields of distribution and healthcare.  His prior experience also includes working for the Office of Legal Affairs of ICPO-INTERPOL, where he advised the organisation on issues of, among other things, compliance with international law.

Direct dial: +44 (0)207 380 4390




LL.M. in International Law, Leiden University, Netherlands

LL.B in Greek and European Law, National and Kapodistrian University of Athens, Greece



Greek, English, Spanish and French

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