Francisco Martínez Jiménez (born 15 June 1973), known as Keko, is a Spanish retired footballer who played as a striker. He amassed Segunda División totals of 160 games and 44 goals over five seasons, representing in the competition Terrassa, Tenerife and Poli Ejido. He added 387 matches and 141 goals in the Segunda División B, where he spent the better part of his 18-year senior career.