Prabda Yoon (Thai: ปราบดา หยุ่น; RTGS: Prapda Yun; born 2 August 1973 in Bangkok) is a Thai writer, novelist, filmmaker, artist, graphic designer, magazine editor, screenwriter, translator and media personality.

His literary debut, Muang Moom Shak (City of Right Angles), a collection of five related stories about New York City, and the follow-up story collection, Kwam Na Ja Pen (Probability), both published in 2000, immediately turned him into "...the talk of the town..."[1] In 2002, Kwam Na Ja Pen won the S.E.A.

Prabda's literary work has been translated to Japanese and published in Japan regularly.

In 2012, he opened Bookmoby Readers' Cafe, a small bookshop at the Bangkok Art and Culture Centre.

The Sad Part Was, a collection of twelve short stories mostly taken from Prabda's Kwam Na Ja Pen[2] in English, translated from Thai by Mui Poopoksakul[3] (who won an English PEN Award for her translation), was published by the London-based independent publisher, Tilted Axis, and released in the UK on 3 March 2017.