Dennis Castillo Romero (born April 30, 1993) is a Costa Rican footballer who plays for Sporting San José in Liga FPD.

Castillo also played college soccer for the VCU Rams, and was part of the development academy for Deportivo Saprissa, one of the top clubs in Costa Rica.

Ultimately, he was part of a squad that was ranked as high as 14th in the nation, and helped the Rams earn their first NCAA Tournament berth for the first time since 2004.

During his senior year, he helped the Rams reach the 2015 Atlantic 10 Men's Soccer Tournament championship game, and was named with conference honors.

[2] On June 22, 2016, Castillo made his first MLS start for Colorado, playing in the entire 90 minutes in a 1–1 draw at LA Galaxy.