Tahnoun bin Zayed Al Nahyan (national security advisor)

Tahnoun bin Zayed Al Nahyan or Tahnoon bin Zayed Al Nahyan (born 4 December 1968) is an Emirati politician and the National Security Advisor of United Arab Emirates (UAE) since 2016. At the same time he manages a $1.3 trillion business portfolio, which supports national security interests, and the UAE's opaque corporate sector. He chairs the AI company G42 and MGX.

He is part of the ruling family in Abu Dhabi, brother of UAE President Mohamed bin Zayed Al Nahyan. Tahnoun has been involved in numerous controversies, from violating EU sanctions against Syrian president Bashar al-Assad, spying on political opponents in Project Raven, deals to re-sell Russia's Sputnik vaccine to poor countries at substantial mark-ups, orchestrating the Qatargate bribery case, and a smear campaign against Qatar and the Muslim Brotherhood, as revealed 2023 in the Abu Dhabi Secrets.

In 2025, Tahnoon's businesses bought 49% share in the Donald Trump family's cryptocurrency firm World Liberty Financial (WLF) for half a billion dollars and bought $2 billion worth of USD1 stablecoins from WLF. Shortly thereafter, the Trump administration ignored national security concerns and committed to provide 500,000 of the most advanced AI chips a year to the UAE.

Following the succession of Mohamed bin Zayed Al Nahyan as the ruler of Abu Dhabi, Sheikh Tahnoun was speculated to be a possible choice for the position of Crown Prince of Abu Dhabi.