Sir Speedy (born Juan Antonio Ortiz Garcia) is a Puerto Rican reggaeton singer.

In 2005, he released a remix of the single "Siéntelo" ("Feel It") which was originally recorded for the 2001 various artists compilation Sandunguero, by DJ Blass. The remix featured Lumidee and hit the top 10 in Belgium, Finland, France, Switzerland, and the Netherlands. Billboard called it "the first international reggaetón hit". PopMatters critic Matt Cibula described Speedy as "charismatic and spunky", and said that despite its sometimes confusing lyrics and Speedy's "thin" voice, Speedy's 2005 album Nueva Generación was possibly the best reggaeton album of the year and "an excellent example of what intelligent and sophisticated but unpretentious pop music can do when it wants to."

Other artists he has worked with include Plan B, Daddy Yankee and Lito & Polaco. Speedy is currently working on new mixtapes for his label Yoko-Joe Records.