Ruti Aga (born 16 January 1994)[1] is an Ethiopian long-distance runner.

In 2012, Aga won the silver medal in the women's 5000 metres at the 2012 World Junior Championships in Athletics held in Barcelona, Spain.

[2] In 2013, she finished in fifth place in the junior women's race at the 2013 IAAF World Cross Country Championships staged in Bydgoszcz, Poland.

[3] The same year, she won the gold medal in the women's 5000 metres at the 2013 African Junior Athletics Championships in Bambous, Mauritius.

Aga competed in the women's marathon event at the 2019 World Athletics Championships.