Grimsby is a seaport on the Humber Estuary in Lincolnshire, England. It has been the administrative centre of the unitary authority of North East Lincolnshire since 1996. According to legend.

The town itself has a population of around 87,574. It is physically linked to the adjoining town of Cleethorpes, and 11,000 of its inhabitants live in the village of Scartho which was absorbed into Grimsby before laws on the Green Belt were put in place. All three areas come under the jurisdiction of the same council, North East Lincolnshire Council. This combined conurbation has a population of 138,842 making it the largest in Lincolnshire as a whole. It is close to the terminus of the A180, which ends in Cleethorpes.

Grimsby is soon to be vastly redeveloped as over £13 million is being used to improve the town. It is currently being planned out by a small team of officials, however no details have been released as to which areas of the town will specifically change.

Recently it has been suggested that some of the areas that will be redeveloped include Freeman Street and the Yarborough Estate.

Grimsby was featured in the Open University documentary Coast, which despite the food heritage of historic significance, chose to show only a 'fish-finger' production line.

The MP for Grimsby before Austin Mitchell was Highgate School-educated Anthony Crosland, who served in the Government of Harold Wilson as Education Minister and Foreign Secretary. He was a champion of comprehensive education, and Whitgift School is situated in the town's Crosland Road.

Grimsby is the site of a Blue Cross Animal Hospital, one of only four in the country, the other three being situated in London. The Grimsby hospital was previously in Cleethorpe Road, but in 2005 it moved to a new building in Nelson Street.