Santiago Tréllez Vivero (born 17 January 1990) is a Colombian professional footballer who plays as a striker for Brazilian club Operário-PR.

[1] After impressing during the 2007 South American Under-17 Football Championship and the 2007 FIFA U-17 World Cup, he joined Flamengo, but documentation and financial problems limited his appearances.

[2] In 2008, Tréllez joined Vélez Sarsfield; initially playing for the reserves, he was only a backup option to starter Santiago Silva, and later suffered a knee injury which kept him out for several months.

[10] An immediate starter, he scored nine times in 17 matches; highlights included braces against Cortuluá, Independiente Santa Fe and Once Caldas.

[13] On 26 November, he scored another brace against Ponte, netting twice in the 3–2 away win but later being booked and subsequently suspended for the last round;[14] the club still managed to avoid relegation nonetheless.