Cuarto milenio is a Spanish television program directed and presented by journalist Iker Jiménez and Carmen Porter. The program has been broadcast weekly on television channel Cuatro since November 2005, being the channel's longest running program. The program has spawned two spin-offs; La mesa del coronel, a geopolitical program presented in 2019 by Col. Pedro Baños, and Horizonte, produced by the same team and ongoing since 2020.