Gonzalo Boye Tuset (born 3 April 1965) is a lawyer based in Spain, known for being convicted in connection with a kidnapping by Basque separatist group ETA in 1996, and for attempting to charge members of the George W. Bush administration officials for war crimes committed against Spanish citizens.

[1][2][3][4] In recent years, he has often been in the media spotlight as lawyer of former Catalan President Carles Puigdemont, who he successfully defended against extradition from several EU countries to Spain.

[5] His father developed anti-pinochetista stances while his mother (of Catalan descent) turned to support Pinochet instead.

[1][3] Spain has a tradition of being more aggressive than other nations, famously trying to extradite Chilean leader Augusto Pinochet from Britain.

Boye has been the lawyer for Pablo González Yagüe,[10][11] a Russian-Spanish journalist arrested by the Polish authorities in February 2022 as a Russian agent and held without trial until a multinational exchange of prisoners with Russia in August 2024.