Ashu Kasim Rabo (born 20 October 1984) is an Ethiopian long-distance runner who specialises in the half marathon and marathon events. Her personal bests are 68:56 minutes and 2:23:09 hours, respectively.
She has won the Istanbul Marathon (2010) and the Xiamen Marathon (2012). Ashu has represented Ethiopia internationally on three occasions: at the 2003 IAAF World Half Marathon Championships, the 2006 IAAF World Road Running Championships, and in the 10,000 metres at the 2007 All-Africa Games (where she was fourth).
She competed at the 2003 IAAF World Half Marathon Championships in Vilamoura, Portugal and finished in 47th place. Running at the 2006 IAAF World Road Running Championships, she finished 17th and helped the Ethiopian team of Dire Tune and Teyba Erkesso to the team silver medal. She had further success on the track the following year as she was fourth in the 10,000 metres at the 2007 All-Africa Games. She won the 15K Boilermaker Road Race in 2008.
Ashu made her marathon debut at the 2009 Paris Marathon and recorded a best of 2:25:49 for fourth place. In October she attended the Istanbul Marathon as claimed second place behind Bizunesh Urgesa. She ran at the 2010 Prague Marathon and finished in third place with a time of 2:29:54. She returned to Istanbul that year and reached the top of the podium with a course record run of 2:27:25.