Citadel is an American spy action television series created by Josh Appelbaum, Bryan Oh, and David Weil for Amazon Prime Video, with the Russo brothers acting as executive producers.

Multiple non-English language spin-off shows have been announced, with settings being in the Italian Alps, India, Spain, and Mexico.

The series was originally a partnership between AGBO and the screenwriting collective Midnight Radio, comprising Josh Appelbaum and André Nemec.

[11] Starring alongside Madden and Chopra, Roland Møller will play Laszlo Milla, a lead operative of Citadel's rival intelligence agency, Manticore.

[16] Citadel will include spin-off shows in different languages set in the Italian Alps, India, Spain, and Mexico.

The website's critics consensus reads, "Citadel spares no expense but still feels underdeveloped, yielding a fairly fun spy caper that nonetheless creaks under the weight of its own exorbitance.