Ruth Lillegraven (born 21 October 1978) is a Norwegian poet, novelist and children's writer.

She worked for the publishing house Det Norske Samlaget from 2001 to 2007, and was appointed senior advisor in the Ministry of Transport from 2007 to 2015, writing speeches.

In 2014 she published the long poem Manilahallen, and another children's book, Mari og Magnus hos bestemor.

The sequel Av mitt blod came in 2021,[1] and was shortlisted for the Sølvkniven prize at the Randaberg crime festival Blodig alvor i landsbyen.

[5] She wrote the poetry collection Dette er andre dagar in 2020, and the children’s books Dei svarte svanene (2020), Hytta som forsvann (2020), and Fanga på fjorden (2021).