Owain Arthur (born 5 March 1983) is a Welsh actor, who rose to fame playing Francis Henshall in The National Theatre's production of One Man, Two Guvnors at the Theatre Royal Haymarket.

Arthur then trained at the Guildhall School of Music and Drama in London.

[3] He also voiced Lofty in the 2018 video game Ni no Kuni II: Revenant Kingdom.

[4] Co-star Morfydd Clark mentioned enjoying speaking in Welsh on-set with Arthur and Trystan Gravelle.

[5] In 2023, he played Nathan Detroit in the revival of Guys and Dolls at the Bridge Theatre from July to October before returning to the role in February 2024.