Francis Obiorah Obikwelu, born 22 November 1978 in Nigeria and a Portuguese citizen since 2001, is a sprint athlete specializing in 100 metres and 200 metres. He holds the record for the fastest time in the 100 m set by a European competitor with a time of 9.86 seconds. He finished second in the 100 m at the 2004 Summer Olympics in Athens, Greece, the first medal ever in athletics sprinting events for Portugal. He won 100 m and 200 m in 2006 at the European Championships in Athletics and became the first athlete to win both 100 m and 200 m in the same European Championship since 1978. Kim Gevaert also succeeded in this double victory at the same Championship.

He was voted Waterford Crystal European Male Athlete of the Year for 2006 by the European Athletic Association, in an internet poll open to member federations, media and the general public. Obikwelu announced his retirement from competitive athletics after failing to qualify for the 100 m finals in the 2008 Beijing Olympics, but retracted his statement, agreeing to honour the last year of his contract with his track club. Obikwelu won the 100 m gold medal at the 2009 Lusophony Games.