Sidney Mark Ujakpor Sánchez (born 18 January 1987 in Spain[1]) is a Spanish athlete specializing in the 400 metres and 400 metres hurdles.

His coach is David López Capapé, former 400 metres hurdler and orthopaedic surgeon.

He has a Nigerian father and a Spanish mother.

[1] Outdoor Indoor

This biographical article relating to Spanish athletics is a stub.