"Daleks in Manhattan" is the fourth episode of the third series of British science fiction television series Doctor Who. It was broadcast on BBC One on 21 April 2007, and is the fourth episode of Series 3 of the revived Doctor Who series. It is part one of a two-part story, concluded in "Evolution of the Daleks". In New York City, 1930, in the midst of the Depression, people are disappearing from among the homeless and jobless masses. Pig-like creatures hide in the sewers, and at the bottom of the Empire State Building, some of the Doctor's greatest and oldest enemies, the Daleks, are at work, preparing their most horrific plan yet.

According to the BARB figures this episode was seen by 6.69 million viewers and was the eighteenth most popular broadcast on British television in that week.

The Doctor and Martha arrive in New York City in November 1930 during the Great Depression, landing the TARDIS at the base of the Statue of Liberty. They find a newspaper article about recent disappearances and travel to Hooverville, a tent city in Central Park. There they meet Solomon, who explains more about the disappearances. A wealthy businessman named Mr. Diagoras appears in Hooverville to recruit workers for sewer construction. The Doctor, Martha, Solomon, and a young man named Frank sign up. They are taken to the sewer and instructed to clear a collapsed tunnel. As they explore the tunnels the Doctor finds a mass of alien organic matter that he takes with him to analyze later. The group soon runs into a group of Pig Slaves and are forced to flee but Frank is captured by the creatures.

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