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.
Most notably, he co-founded International Community for the Relief of Suffering and Starvation (ICROSS) with Michael Elmore-Meegan.
Born in Belfast, Barnes lectured in tropical medicine at the Royal College of Surgeons in Ireland.
He became a centenarian in November 2014, and died in 2017, aged 102.