Juan Esteban Curuchet (born 4 February 1965 in Mar del Plata) is an Argentine road bicycle racer and track cyclist.

Curuchet represented Argentina at the Summer Olympics in 1984, 1988, 1996, 2000, 2004, and 2008.

He won the madison at the 1999 Pan American Games with his older brother, Gabriel Ovidio Curuchet. He also won the madison at the 2003 Pan American Games and 2007 Pan American Games alongside Walter Pérez and the Cycling World Championships in 2004 (Men's Madison).

Curuchet holds an Argentine record of participating in six non-consecutive Olympic games. He retired from his Olympic career at age 43, by winning the Men's Madison gold medal at the 2008 Summer Olympics with Walter Pérez.

In 2008, he received the gold Gold Olimpia Award as the best athlete of the year from his country with Walter Pérez. In 2000 and 2010 he won the Platinum Konex Award as the best cyclist of the last decade in Argentina.