Kent is a city in the U.S. state of Ohio and the largest city in Portage County. It is located along the Cuyahoga River in Northeast Ohio on the western edge of the county. The population was 28,215 at the 2020 census. The city is counted as part of the Akron metropolitan area and the larger Cleveland–Akron–Canton combined statistical area.

Part of the Connecticut Western Reserve, Kent was settled in 1805 and was known for many years as Franklin Mills. Settlers were attracted to the area due to its location along the Cuyahoga River as a place for water-powered mills. Later development came in the 1830s and 1840s as a result of the settlement's position along the route of the Pennsylvania and Ohio Canal. Leading up to the American Civil War, Franklin Mills was noted for its activity in the Underground Railroad. With the decline of the canal and the emergence of the railroad, the town became the home of the Atlantic and Great Western Railroad maintenance shops through the influence of Marvin Kent. In 1864 the town was renamed Kent in honor of Marvin Kent's efforts. It was incorporated as a village in 1867 and became a city after the 1920 Census. Today Kent is a college town best known as the home of the main campus of Kent State University, founded in 1910, and as the site of the May 4, 1970 Kent State shootings.

Historically a manufacturing center, education is the city's largest economic sector with Kent State University being the city's, and one of the region's, largest employers. The Kent City School District and the Kent Free Library provide additional education opportunities and resources. Many of Kent's demographic elements are influenced by the presence of the university, particularly the median age, median income, and those living below the poverty level. The city is governed by a council-manager system with a city manager, a nine-member city council, and a mayor. Kent has nearly 20 parks and preserves and hosts a number of annual festivals including ones related to Earth Day, folk music, and the U.S. Independence Day. In addition to the Kent State athletic teams, the city also hosts a number of amateur and local sporting events. Kent is part of the Cleveland–Akron media market and is the city of license for three local radio stations and three television stations and includes the regional affiliates for National Public Radio (NPR) and the Public Broadcasting Service (PBS). Local transportation infrastructure includes a public bus service and hike-and-bike trails. As the home of the Davey Tree Expert Company, Kent is known as "The Tree City" while residents are referred to as "Kentites". The city has produced a number of notable individuals, particularly in politics, athletics, and the entertainment industry.

The region was originally inhabited by Native Americans, including the early Mound Builders. Around 1780, Captain Samuel Brady achieved notoriety for his activities in the area, including his leap of 21 feet (6 m) over the Cuyahoga River to avoid capture by a Native band. The site, known as Brady's Leap, is now a city park. Settlement by Europeans began in the late 1790s and early 19th century. As part of the Connecticut Western Reserve, the area was divided into survey townships in 1798 and almost all of what is now Kent was originally part of Town 3 Range 9, which would eventually be known as Franklin Township. Aaron Olmsted, a wealthy Connecticut merchant, had purchased the 16,000-acre (6,500 ha) township and named it for his son Aaron Franklin Olmsted.

Franklin Township was surveyed in 1803 and settled in November 1805 when John Haymaker and his family moved west from Warren to the banks of the Cuyahoga River. They were joined by John's brother George and their father Jacob Haymaker and their families early the next year, and built a gristmill in 1807. Initial growth in the area was slow, but eventually two small villages developed due to the potential for power generated by the Cuyahoga River to be used in gristmills and manufacturing. The first village, known as Franklin Mills, or locally as the "Lower Village", developed mostly around the original Haymaker property. In 1818, Joshua Woodard arrived in the area and began constructing buildings just north of the village forming the "Upper Village" that would be known briefly as Carthage.

In the 1820s, Franklin Mills was included in the route of the Pennsylvania and Ohio Canal (P & O Canal). When construction began on the canal in the mid-1830s, land speculation was rampant in many areas of northeast Ohio along the canal, including Franklin Mills. As a result, an industrial and business region was established along the east side of the river in what is now downtown Kent. Factories and mills were either planned or constructed along the Cuyahoga River, some of which either were never built or ultimately failed, due mostly to effects of the Panic of 1837. A lock and attached arch dam was completed in 1836. The canal officially opened in 1840, but was shut down by the 1870s.

Leading up to the American Civil War, Franklin Mills had three notable stops on the Underground Railroad, giving fugitive slaves shelter on their escape to Canada; one still stands as of 2010. From 1835 to 1839, noted American abolitionist John Brown moved to the village, partnering with Zenas Kent to build a tannery along the Cuyahoga River.

In 1863 the Atlantic and Great Western Railroad was constructed through Franklin Mills, due largely to the efforts of local businessman Marvin Kent, son of Zenas Kent. Marvin Kent had started his own railroad company, the Franklin and Warren Railroad, in 1851 after Franklin Mills was bypassed by the Cleveland and Pittsburgh Railroad. Kent was also successful in getting the village named as the location of the railroad's maintenance yards and shops in 1864. The geographic location along the railroad and being home to the shops reinvented and revitalized the village as an important stop on the line between St. Louis and New York City. The shops opened in 1865 and the railroad played an important part of Kent's industry and development through the early 20th century before the shops were completely shut down in 1930. To honor Marvin Kent, the village was renamed Kent in 1864, although this change was not official until the village was incorporated on May 6, 1867.