Gyunduz Aidynovych Mamedov (Ukrainian: Гюндуз Айдинович Мамедов; Azerbaijani: Gündüz Aydın oğlu Məmmədov; born 26 October 1974) is an Azerbaijani-born Ukrainian lawyer and human rights activist who has served as Prosecutor of the Autonomous Republic of Crimea since 22 August 2016, and also served as Deputy Prosecutor General of Ukraine from 18 October 2019 to 21 July 2021.

While working in Odesa, he was engaged in high-profile affairs; in particular, he actively fought against the distribution of narcotic substances in law enforcement agencies, to expose corruption schemes and gambling, and arrested a criminal group that carried out robberies, extortion and other actions for two years.

Правоохоронні органи 🇺🇦мають вимагати екстрадиції всіх осіб, що звинувачені судом у сприянні анексії Криму.

[3][4] As Prosecutor, he worked to assemble evidence of Russian war crimes in Crimea, with the intention of bringing them to the International Criminal Court.

These moves were reflected in the Strategy for the Development of Activities of the Prosecutor's Office of the Autonomous Republic of Crimea in the conditions of temporary occupation for 2019–2021.

[9] In an interview with Ukrinform, he also expressed his support for Zelenskyy's reforms of the Office of Prosecutor General of Ukraine, calling it a "request of society".

The investigation into the attack on Malaysian flight MH17 helped the Office of the Prosecutor General to learn how to gather evidence without access to uncontrolled territories.

On February 8, 2023, JIT representatives stated at a press conference in The Hague that the President of the Russian Federation was involved in the crash of the liner, as he personally approved the supply of anti-aircraft missiles to the territory of Ukraine.

He emphasizes the importance of Ukraine, which is regularly under fire from Iranian Shahed drones, taking an active part in the process of bringing the perpetrators to justice.

At the time, on the initiative of the Prosecutor General's Office, an interdepartmental working group was created in the Ministry of Justice, which was supposed to prepare a draft law on the dual system of regular penitentiary inspections.

[22] During these events, he came up with the idea of establishing a working group aimed at ensuring compliance with international humanitarian law and providing legal services within the Armed Forces of Ukraine.

The group’s primary goal was not merely to disseminate knowledge about IHL among service members but also to develop a robust mechanism for its effective implementation.

In his opinion, Ukraine should apply to the Secretary General of the UN about the violation of ENMOD to establish an advisory council, as well as to the International Court of the UN about compensation for the damage caused.