Santiago Raúl Lange (born September 22, 1961 in San Isidro, Argentina) is an Argentine Olympic sailor and a naval architect.

He studied Naval Architecture at Southampton College of Higher Education (now known as Solent University) he did a degree in yacht design.

He went on to work for Argentina designer German Frers for a couple of years before concentrating on competitive sailing.

[1] Representing Argentina over a 32-year period, he competed seven times in the Summer Olympics, winning a gold and two bronze medals.

[8] One of the most remarkable things is that in 2015 following a repeatable illness, he was diagnosed with cancer in his lung, which required 25% removal of one of his lungs[9][10] he battled back quickly to take gold despite the loss of fitness and time on the water so close to the games in which he won gold.