Jackson Arley Martínez Valencia (pronounced: [ˈʒaksom marˈtines]; born 3 October 1986) is a Colombian professional footballer who plays as a striker for Chinese club Guangzhou Evergrande Taobao and the Colombian national team.
He is often nicknamed “Cha Cha Cha” for his dance-like moves on the pitch. Noted columnist Tim Vickery describes him as “an out-and-out goalscorer, a front-to-goal centre-forward who can finish off both feet.” He was Primeira Liga’s top scorer in all three of his seasons at FC Porto.
Martínez has represented Colombia at international level since 2009, playing at the 2011 and 2015 Copa América, as well as the 2014 FIFA World Cup.
2016年2月3日上午（马德里当地时间2月3日凌晨），广州恒大淘宝足球俱乐部官方宣布与西甲传统劲旅马德里竞技队神锋、哥伦比亚现役国脚马丁内斯（全名Jackson Arley Martinez Valencia）正式签约，转会费为4200万欧元，签约四年。