Rwinkwavu (Kinyarwanda: Umurenge wa Rwinkwavu) is one of the 12 sectors in the district of Kayonza in the Eastern Province of Rwanda.

Rwinkwavu sector covers an area of 92.32 km2 and lies at an altitude of about 1,430 m. The sector is divided into the cells Gihinga, Mbarara, Mukoyoyo and Nkondo.

It borders Mwiri to the north, Kabare to the east, Murama to the south, Kabarondo to the southwest and Nyamirama to the west.

Ten years earlier, it was 28,225, which corresponds to an annual population increase of 2.7 percent between 2012 and 2022.

[2][5] National Road 25 runs through the eastern half of the sector.