Flint is a city in and the county seat of Genesee County, Michigan, United States. The city's population was 81,252 at the 2020 census, and was estimated to be 79,735 in 2024. making it the largest city in Genesee County and the 12th-most populous city in Michigan.

Located along the Flint River 66 miles (106 km) northwest of Detroit, it is a principal city within the Mid Michigan region.

The Flint metropolitan area is located entirely within Genesee County and is the fourth-largest metro area in Michigan, with a population of 406,892 in the 2020 census. The city was incorporated in 1855.

Flint was founded as a village by fur trader Jacob Smith in 1819 and became a major lumbering area on the historic Saginaw Trail during the 19th century. From the late 19th century to the mid-20th century, the city was a leading manufacturer of carriages and later automobiles, earning it the nickname "Vehicle City". General Motors (GM) was founded in Flint in 1908, and the city grew into an automobile manufacturing powerhouse for GM's Buick and Chevrolet divisions, especially after World War II up until the early 1980s recession. Flint was also the home of a sit-down strike in 1936–37 that played a vital role in the formation of the United Auto Workers.

Since the late 1960s, Flint has faced several crises. The city experienced an economic downturn after GM significantly downsized its workforce in the area from a high of 80,000 in 1978 to under 8,000 by 2010. From 1960 to 2010, the population of the city nearly halved, from 196,940 to 102,434. In the mid-2000s, Flint became known for its comparatively high crime rates and has repeatedly been ranked among the most dangerous cities in the United States according to crime statistics. The city was under a state of financial emergency from 2002 to 2004 and again from 2011 to 2015.

From 2014 to 2019, Flint faced a public health emergency due to lead contamination in parts of the local water supply as well as an outbreak of Legionnaires' disease. The acute lead crisis has been addressed as the city has secured a new source of clean water, installed modern copper pipes to nearly every home, and distributed filters to all residents who want them. However, a legacy of distrust in public authorities remains.

The region was home to several Ojibwe tribes at the start of the 19th century, with a particularly significant community established near present-day Montrose. The Flint River had several convenient fords which became points of contention among rival tribes, as attested by the presence of nearby arrowheads and burial mounds. Some of the city currently resides atop ancient Ojibwe burial grounds.

In 1819, Jacob Smith, a fur trader on cordial terms with both the local Ojibwe and the territorial government, founded a trading post at the Grand Traverse of the Flint River. On several occasions, Smith negotiated land exchanges with the Ojibwe on behalf of the U.S. government, and he was highly regarded on both sides. Smith apportioned many of his holdings to his children. As the ideal stopover on the overland route between Detroit and Saginaw, Flint grew into a small but prosperous village and incorporated in 1855. The 1860 U.S. census indicated that Genesee County had a population of 22,498 of Michigan's 750,000.