Owosso (ə-WOSS-oh) is the largest city in Shiawassee County in the U.S. state of Michigan.

The city is mostly surrounded by Owosso Township on its west, but the two are administered autonomously.

The city was named after Chief Wosso, an Ojibwe leader of the Shiawassee area.

[5] Alfred L. and Benjamin O. Williams were early European-American settlers in the area.

They lived on Oliver and Water streets where they operated an Underground Railroad waystation, where they provided aid and shelter for enslaved African Americans.

The city's first mayor was Amos Gould, a judge originally from New York.

In the 1950s, Owosso was reported by a major Montgomery, Alabama, newspaper to be a sundown town, where African Americans were not allowed to live or stay overnight.

[9] Owosso experiences frigid winters, with the last snow usually falling in April, typically Northern Midwestern spring thaws, balmy to hot summers, and colorful falls, with the first snows usually occurring sometimes in December but typically in January.

[18] The Shiawassee Area Transportation Agency (SATA) provides city bus service.

The majority of buses are lift-equipped, and the service operates from 6:00 a.m. to 10:00 p.m. on Mondays through Fridays.

Owosso is the headquarters of Indian Trails Bus Lines, which provides regularly scheduled intercity bus service from Owosso to connect with points throughout Michigan and the U. S. Indian Trails also provides chartered bus service to and from points throughout the U. S. Owosso Community Airport provides a 4,300-foot (1,300 m) long lighted runway for private planes and air taxi services.

[20] Owosso is the headquarters of the Great Lakes Central Railroad, which provides freight service to Northern and Southern Michigan.