| Borough of Castle Morpeth | |
| Type: | Borough |
| Blank Emblem Type: | Coat of Arms |
| Mapsize: | frameless |
| Subdivision Type: | Sovereign state |
| Subdivision Name: | United Kingdom |
| Subdivision Type1: | Constituent country |
| Subdivision Name1: | England |
| Subdivision Type2: | Region |
| Subdivision Name2: | North East England |
| Subdivision Type3: | Administrative county |
| Subdivision Name3: | Northumberland |
| Seat Type: | Admin. HQ |
| Seat: | Morpeth |
| Government Type: | Castle Morpeth Borough Council |
| Leader Title: | Leadership |
| Leader Name: | Alternative – Sec.31 |
| Established Title: | Founded |
| Established Date: | 1 April 1974 |
| Extinct Title: | Abolished |
| Extinct Date: | 1 April 2009 |
| Population Density Km2: | auto |
| Timezone: | Greenwich Mean Time |
| Utc Offset: | +0 |
| Timezone Dst: | British Summer Time |
| Utc Offset Dst: | +1 |
| Postal Code Type: | Postcode |
| Blank Name: | ISO 3166-2 |
| Blank1 Name: | ONS code |
| Blank1 Info: | 35UE |
| Blank2 Name: | OS grid reference |
| Blank3 Name: | NUTS 3 |
| Blank4 Name: | Ethnicity |
| Blank4 Info: | 98.1% White |
| Website: | castlemorpeth.gov.uk |
Castle Morpeth was a local government district and borough in Northumberland, England. Its administrative centre was the town of Morpeth.
The district was formed on 1 April 1974 by the merger of the borough of Morpeth and Morpeth Rural District, along with part of Castle Ward Rural District.
The district council was abolished as part of the 2009 structural changes to local government in England effective from 1 April 2009 with responsibilities being transferred to Northumberland County Council, a unitary authority.
The district includes the settlements and parishes of (towns highlighted in bold):
Castle Morpeth is located along the vital East Coast Main Line rail artery stretching from London to Edinburgh. The rail line offers services to other major intermediate cities such as Newcastle and Peterborough.
Irene Brumwell became the last Mayor of Castle Morpeth Borough as structural changes to local government in England effective on 1 April 2009 abolished the borough.