Samuel Adelebari Francis is a sprinter who specializes in the 100 metres. He was born in Port Harcourt, the capital of Rivers State, Nigeria. He is a naturalized Qatari and has competed for Qatar from July 2007. His personal best of 9.99 seconds is the former Asian record for the 100 m.

The 100 metres at the 2007 World Championships in Athletics was held at the Nagai Stadium on August 25 and August 26.