Ruhaini Matdarin (born 16 March 1981, Kota Kinabalu) is a Malaysian writer from Sabah.

She is of Dusun Muslim descent from the highland town of Ranau located on the foothills of Mount Kinabalu, albeit her given name, although she was born and bred in the state capital city of Kota Kinabalu in which she also currently resides and she is the eldest of three children in the family.

In 2003, she graduated from the Faculty of Finance Management of the University of Science, Malaysia in Gelugor, Penang.

Since 2016, she has become a freelancer in order to have free time for writing and run her business simultaneously without any hassle and is also a life member of the Writers' Union of Malaysia.

[3] It seems that the virtue of her books is in her capability to describe what is happening nowadays in Malaysia with humor, and sometimes with undisguised satire, resorting to the paradox as an artistic mean, changing the usual perception of life.