Margaret Wangari Muriuki (born 21 March 1986) is a Kenyan professional long and middle distance runner.
She shared in the team gold medal at the 2010 IAAF World Cross Country Championships.
She was the runner-up at the 2012 African Cross Country Championships behind teammate Joyce Chepkirui, both of whom shared the team title.
[3] Showing her versatility, she went back down to the 1500 m at the 2012 African Championships in Athletics and won the bronze medal for Kenya in a personal best of 4:06.50 min.
[6] In 2020, amid scares of the disease COVID-19 spreading in California, Muriuki ran a dominant race in the Los Angeles Marathon, crossing the finish with a 3-minute lead in a time of 2:29:27.