Third Watch is een Amerikaanse dramaserie van de zender NBC. De serie ging in première op 23 september 1999.
Third Watch volgt de belevenissen van politieagenten, brandweermannen en ambulancepersoneel in het fictionele 55th Precinct. De dienst van het personeel loopt tussen 3.00pm tot 11.00pm, de zogenaamde Third Watch.
Ty spends the shift on foot patrol with Candyman and discovers some disturbing facts about both his late father and Candyman; romance blooms between Doc and Morales after Doc's father tells him to get on with his life; Matty's attempts to make amends for past misdeeds have upsetting outcomes; Jimmy has an unexpected and unpleasant visit with his bookie; Faith clashes with the mother of a missing girl; Sully puts in a good word for a hit-and-run driver to a completely unsympathetic D.A.; and Bobby is crushed to learn that Matty was an unwitting accessory to a felony homicide.