Joseph Barnes (14 November 1914 – 4 May 2017) was an Irish physician and medical missionary who worked in leper colonies in West Africa in the 1940s. There he worked with sisters from the Medical Missionaries of Mary including Sr Mary de Lourdes Gogan. Most notably, he co-founded International Community for the Relief of Suffering and Starvation (ICROSS) with Michael Elmore-Meegan.