East Suffolk was a county constituency in Suffolk, England. It elected two Members of Parliament to the House of Commons of the Parliament of the United Kingdom by the bloc vote system of election.

The seat was created under the Reform Act 1832 as one of two divisions, together with the Western Division, of the Parliamentary County of Suffolk. This resulted in a more representative allocation, with a total of four MPs instead of two for the former entire county at large, which still allowed for double voting (or more) of those Forty Shilling Freeholders who also were householders or landlords of any particular boroughs within the county. This Act retained the four largest boroughs of the seven before 1832, with the three abolished boroughs of Aldeburgh, Dunwich and Orford being absorbed into the Eastern Division.

Further sweeping changes took place as a result of the Redistribution of Seats Act 1885 which saw the 2 two-member Suffolk divisions being replaced by five single-member constituencies. The Eastern Division was largely replaced by the Northern or Lowestoft Division, the North-Eastern or Eye Division and the South-Eastern or Woodbridge Division.

1832–1885: The part of the county of Suffolk not included in the West Suffolk constituency, i.e. the Hundreds of Blything, Bosmere and Claydon, Carlford, Colneis, Hoxne, Loes, Mutford and Lothingland, Plomesgate, Samford, Thredling, Wangford, and Wilford, and the Liberty of Ipswich.^[1]