Stamford () is a city in the U.S. state of Connecticut, 34 miles outside of Manhattan. It is Connecticut's second-most populous city (behind Bridgeport). With a population of 135,470, Stamford passed Hartford and New Haven in population as of the 2020 census. It is in the Bridgeport-Stamford-Norwalk-Danbury metropolitan statistical area, which is part of the New York City metropolitan area (specifically, the New York–Newark, NY–NJ–CT–PA Combined Statistical Area).
As of 2019, Stamford is home to nine Fortune 500 companies and numerous divisions of large corporations. This gives it the largest financial district in the New York metropolitan region outside New York City and one of the nation's largest concentrations of corporations. Dominant sectors of Stamford's economy include financial services, tourism, information technology, healthcare, telecommunications, transportation, and retail.