Francis D. Jaryan Sr., is a Liberian Research Scientist. He holds a Bachelor of Science degree (BSc) in Biology and a Master of Science degree (MSc) in Microbiology from the University of Liberia and Bowen University, Nigeria respectively. He is currently a PhD student at Bowen University, Nigeria.

He serves as a laboratory scientist at Africabio Enterprises Inc. and the Joint West Africa Research Group (JWARG) within Liberia. Francis also serves on multiple international biomedical research projects. He currently works as a Research Scientist at the National Public Health Institute of Liberia (NPHIL).