| Blanca Judith Díaz Delgado | |
| Birth Date: | 1958 2, df=yes |
| Birth Place: | Mexico City, Mexico |
| Education: | UANL |
| Party: | Morena (since 2015) |
| Otherparty: | National Action Party (1996–2015) |
| Office: | Senator of the Republic from Nuevo León |
| Term Start: | 1 September 2024 |
| Termend2: | 24 May 2012 |
| Termstart2: | 1 September 2006 |
| Predecessor: | Indira Kempis Martínez |
| Predecessor2: | Eduardo Arias Aparicio |
| Successor2: | Mario Garza Guevara |
Blanca Judith Díaz Delgado (born 22 February 1958) is a Mexican politician serving since 2024 as a senator from Nuevo León, having previously held the position from 2006 to 2012. A member of Morena and formerly of the National Action Party, she served in the Congress of Nuevo León from 1997 to 2000 and in the Chamber of Deputies from 2003 to 2006.[1] [2]