Stacey Chepkemboi Ndiwa (born 6 December 1992) is a Kenyan female long-distance runner who competes across cross country, track and road running disciplines.

She was a gold medallist at the 2008 Commonwealth Youth Games in the 1500 metres and was a team silver medallist at the IAAF World Cross Country Championships in 2015, where she was fifth individually.

On the roads, she won the Giro Podistico di Pettinengo and the São Silvestre de Luanda.

[6] Sixth place at the Kenyan Cross Country Championships in 2015 brought her her first senior international selection for the world event.

She set a personal best of 1:09:09 hours for the event at the Ústí nad Labem Half Marathon, where she was fourth.