Ramsay's Kitchen Nightmares is a television programme featuring British celebrity chef Gordon Ramsay first broadcast on Channel 4 in 2004.

In each episode, Ramsay visits a failing restaurant and acts as a troubleshooter to help improve the establishment in just one week. Ramsay revisits the restaurant a few months later to see how business has fared in his absence. Episodes from series one and two have been re-edited with additional new material as Ramsay's Kitchen Nightmares Revisited; they featured Ramsay checking up on restaurants a year or more after he attended to them.

An American adaptation of this show, titled Kitchen Nightmares, debuted 19 September 2007 on Fox. It is broadcast in the UK on Channel 4 as Ramsay's Kitchen Nightmares USA to avoid confusion with the original title. Its run ended on 12 September 2014.In October 2009, Ramsay announced that after his four-year contract expired in 2011 he would not continue with Kitchen Nightmares and would instead work on his other shows. Despite this, the show returned for one last series in 2014 (retitled as Ramsay's Costa del Nightmares) where Ramsay visited and helped failing restaurants owned by Britons abroad. The final series also coincided with the ending of the US version. The show has won BAFTA and Emmy awards.