Juan Mónaco (born March 29, 1984 in Tandil), nicknamed "Pico", is a male tennis player from Argentina. He dated Argentinian model and actress Luisana Lopilato until May 2009. He is sponsored by adidas and Yonex.

Started playing at age six. His father, Héctor, is a businessman and mother, Cristina, is an architect. He has two siblings. He enjoys spending time at home in Tandil with family and friends. Favorite sports to follow are soccer and basketball. His favorite teams are Estudiantes de La Plata and the San Antonio Spurs. His favorite surface is clay. He grew up idolizing Andre Agassi and countryman Mariano Zabaleta. He also enjoys going to the cinema. His favorite movies are "Gladiator" and "Lord of the Rings" series. He is coached by former ATP pro Luis Lobo of Argentina.

In 2002 Monaco made his pro circuit debut. In February 12 he won his first Tournament in Jamaica F20, Montego Bay by defeating Francisco Rodriguez of Paraguay. He ended the year ranked no. 470 in the singles.