Suffolk () is an East Anglian county of historic origin in England. It has borders with Norfolk to the north, Cambridgeshire to the west and Essex to the south. The North Sea lies to the east. The county town is Ipswich; other important towns include Lowestoft, Bury St Edmunds, Newmarket, and Felixstowe, one of the largest container ports in Europe.
The county is low-lying but it has quite a few hills (especially more to the west), and has largely arable land with the wetlands of the Broads in the north. The Suffolk Coast and Heaths are an Area of Outstanding Natural Beauty.