Belleville (2004 population 49,060, metropolitan population 88,025) is located at the mouth of the Moira River on the Bay of Quinte in southeastern Ontario, Canada, in the Quebec City-Windsor Corridor.

Originally the Native settlement Asaukhknosk, the city was settled by United Empire Loyalists in 1789, when it was known as Meyer's Creek after prominent settler and industrialist John Walden Meyers. It was renamed Belleville in honour of Lady Arabella Gore in 1816, after a visit to the settlement by Sir Francis Gore and his wife, Lady Arabella. Belleville became an important railway junction with the completion of the Grand Trunk in 1855.

Procter & Gamble, Lipton, Wilson Sports , Sears and Nortel are among the internationally-known companies with industrial operations currently in Belleville. Belleville is the home of Loyalist College and Albert College.

Belleville is the seat for Hastings County, Ontario.

Belleville is also the home of the Belleville Bulls Junior A hockey club. The Bulls play at the Yardmen arena (mainly funded by CNR Yardmen) located at Hwy 401 and Cannifton Rd.

One of the summer events which attracts thousands of people to the Quinte region each year is the Waterfront& Ethnic Festival.