There are 11^[1] Grade I listed buildings in Ipswich, a non-metropolitan district and the county town of Suffolk, England.

In the United Kingdom, the term listed building refers to a building or other structure officially designated as being of "exceptional architectural or historic special interest"; Grade I structures are those considered to be "buildings of "exceptional interest, sometimes considered to be internationally important. Just 2.5% of listed buildings are Grade I." The total number of listed buildings in England is 372,905.^[2] In England, the authority for listing under the Planning (Listed Buildings and Conservation Areas) Act 1990^[3] rests with English Heritage, a non-departmental public body sponsored by the Department for Culture, Media and Sport.

Ipswich is an unparished area, like many urbanized districts, with only 85% of the town population actually living in the area of the borough.

Name	Location	Type	Completed [note 1]	Date designated	Grid ref.[note 2] Geo-coordinates	Entry number [note 3]	Image	Ref.
Christchurch Mansion	Ipswich	Country House	1548	19 December 1951	TM1659344957 52°03′38″N 1°09′29″E / 52.060629°N 1.158161°E / 52.060629; 1.158161 (Christchurch Mansion)	1037784	More images	[4][5]
Church of St Margaret	St Margaret's Green, Ipswich	Church	Early 15th century	19 December 1951	TM1662844855 52°03′35″N 1°09′31″E / 52.059699°N 1.158606°E / 52.059699; 1.158606 (Church of St Margaret)	1374813	More images	[6][7]
Church of St Mary at Stoke	Ipswich	Church	14th century	19 December 1951	TM1623943819 52°03′02″N 1°09′08″E / 52.050551°N 1.152286°E / 52.050551; 1.152286 (Church of St Mary at Stoke)	1235601	More images	[8][9]
Gateway to Wolsey's College of St Mary	College Street, Ipswich	Gate	1528	19 December 1951	TM1637644092 52°03′11″N 1°09′16″E / 52.052948°N 1.154453°E / 52.052948; 1.154453 (Gateway to Wolsey's College of St Mary)	1206515	More images	[10][11]
80 and 80a Fore Street, including Warehouses to Rear (the Saleroom, the Crossway and Warehouse to South Fronting Wherry Quay),	Ipswich	House	17th century	19 December 1951	TM1682544109 52°03′11″N 1°09′40″E / 52.052925°N 1.161002°E / 52.052925; 1.161002 (80 and 80a Fore Street, including Warehouses to Rear (the Saleroom, the Crossway and Warehouse to South Fronting Wherry Quay),)	1025070	More images	[12]
Pykenham	Northgate Street, Ipswich	House	16th century	19 December 1951	TM1646544704 52°03′30″N 1°09′22″E / 52.058407°N 1.156137°E / 52.058407; 1.156137 (Pykenham)	1037724	More images	[13][14]
Pykenham's Gateway and Brick Boundary Wall	Northgate Street, Ipswich	Gateway	15th century	19 December 1951	TM1647344757 52°03′32″N 1°09′23″E / 52.05888°N 1.156287°E / 52.05888; 1.156287 (Pykenham's Gateway and Brick Boundary Wall)	1207459	More images	[15][16]
The Ancient House	Butter market, Ipswich	House	1567	19 December 1951	TM1638144545 52°03′25″N 1°09′17″E / 52.057013°N 1.154813°E / 52.057013; 1.154813 (The Ancient House)	1037756	More images	[17][18]
The Willis Building	Friars Street, Ipswich	Office	1975	25 April 1991	52°03′22″N 1°09′05″E / 52.056221°N 1.151459°E / 52.056221; 1.151459 (The Willis Building)	1237417	More images	[19]
Unitarian Chapel	Friars Street, Ipswich	Chapel	1700	19 December 1951	TM1618744378 52°03′20″N 1°09′07″E / 52.055589°N 1.151882°E / 52.055589; 1.151882 (Unitarian Chapel)	1037739	More images	[20][21]
Sailors Rest	Ipswich	House	Late C17-Early 18th century	19 December 1951	TM1625544251 52°03′16″N 1°09′10″E / 52.054423°N 1.152792°E / 52.054423; 1.152792 (Sailors Rest)	1235370	More images	[11][22]

• Grade II* listed buildings in Ipswich

• Pevsner, Nikolaus (1974). The Buildings of England: Suffolk. Harmondsworth: Penguin Books. ISBN 0-14-071020-5.

Media related to Grade I listed buildings in Ipswich at Wikimedia Commons