Reto Hug (born 24 January 1975 in Marthalen) is a former athlete from Switzerland, who competed in the triathlon.

At the following games, Hug competed again in the triathlon competition, placing 40th with a time of 2:01:40.43.

In 2008, Hug returned to the Olympics and placed 29th in triathlon with a time of 1:52:04.93.

He is married to Swiss triathlete Nicola Spirig.

This biographical article related to a Swiss athlete known for competing in triathlons is a stub.