| Niakhar Arrondissement | |
| Native Name: | Ñaaxar |
| Settlement Type: | Arrondissement |
| Mapsize: | 380px |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: |  Senegal |
| Subdivision Type1: | Region |
| Subdivision Name1: | Fatick Region |
| Subdivision Type2: | Department |
| Subdivision Name2: | Fatick Department |
| Unit Pref: | Imperial |
| Population As Of: | 2005 est. |
| Population Blank1 Title: | Ethnicities |
| Timezone: | GMT |
| Utc Offset: | ±00:00 |
Niakhar Arrondissement (Serer proper : Ñaaxar[1] or Ñakhar,[2] other variation : Nakhar) is an arrondissement of the Fatick Department in the Fatick Region of Senegal.
See main article: Serer creation myth and Serer religion. According to Serer cosmogony, the Saas tree (acacia albida), which is considered to be a fertility tree and a tree of life among the Serers, is abundant in this area which assists in crop rotation and intensive farming.[3] The Jolax matriclan, one of the old Serer matriclan who are enshrined in Serer mythology and legend, is also reported to be heavily concentrated in Niakhar Arrondissement. As of 1983, at least 375 people are reported to be members of this clan.[2]
The arrondissement is divided administratively into rural communities and in turn into villages.