Wellingborough is a town in Northamptonshire, England situated some eleven miles from the county town of Northampton and eight miles south of Kettering. It has a population of 72,519 (as of the 2001 census).

It is situated on the north side of the River Nene with most of the older town being sited on the flanks of the hills above the river's flood plain. Frequent flooding of the Nene's flood plain makes it obvious why the town was mostly built above the flood plain.

It is twinned with Niort, France and Wittlich, Germany. Recently there has been talk of a new twinning with Mont Sillia in Italy and the population await further developments.

Wellingborough dates from the 6th century. It is mentioned in the Domesday Book under the name of Wendelburie, and was granted a market charter in 1201.