| Office: | Spouse of the Prime Minister of Sweden |
| Primeminister: | Hjalmar Hammarskjöld |
| Term Label: | Assumed role |
| Term Start: | 1914 |
| Term End: | 1917 |
| Birthname: | Agnes Maria Carolina Almquist |
| Birth Date: | 1866 |
| Spouse: | Hjalmar Hammarskjöld |
| Children: | 4 |
| Residence: | Uppsala |
Agnes Hammarskjöld (née Almqvist; 1866–1940) was a Swedish woman who was the wife of Hjalmar Hammarskjöld, a Swedish nobleman and prime minister from 1914 to 1917.
Agnes Almqvist was born in 1866.[1] She hailed from an established family, and her father was Fridolf Almqvist who served as the director general of the National Prisons Board.[2] Carl Jonas Love Almqvist, an author, was her father's half-brother.[1] Agnes had four brothers.
She married Hjalmar Hammarskjöld, and they lived in Vasa Castle.[3] They had four sons: Bo, Åke, Sten and Dag.[4]
She was a religious person and intensively dealt with theology. She was one of the confidants of Lars Olof Jonathan Soderblom, the Lutheran bishop of Uppsala.[5] She died in 1940 and was buried in the family grave in Uppsala.[2] [6]
In October 2011 a book about her entitled Agnes dag: en bild av Agnes Maria Carolina Almquist, gift Hammarskjöld was published by Lisa Segerhed.[7]