Tony Estanguet (French pronunciation: [ɛstɑ̃gɛ]; born 6 May 1978 in Pau) is a French slalom canoeist and a three-time Olympic champion in C1 (canoe single). He competed at the international level from 1994 to 2012.

He successfully led Paris's bid for the 2024 Summer Olympics and served as the head of the organising committee for those games.

Estanguet won three Olympic gold medals in the C1 event in 2000, 2004 and 2012. At the 2004 games in Athens he won the gold medal after a late judges decision to award a 2-second penalty to Michal Martikán, for which he was promoted to the rank of Commander in the Ordre national du Mérite, having been inducted as a Chevalier ('Knight') in the order in 2000.

Estanguet was the flag-bearer for France at the 2008 Beijing Summer Olympics opening ceremony. He finished in the 9th position (out of 12 competitors; only the first eight would qualify for the final) in the semi-finals of the C1 event and was thus eliminated from the final.

At the 2012 London Summer Olympics, he became the first French Olympian to win three gold medals in the same Olympic discipline. He was promoted to the rank of Officer of the Legion of Honour on 31 December 2012, having been inducted as a Chevalier in 2000.

He won 12 medals at the ICF Canoe Slalom World Championships with five golds (C1: 2006, 2009, 2010; C1 team: 2005, 2007), six silvers (C1: 2003, 2005, 2007; C1 team: 1997, 2003, 2009), and a bronze (C1 team: 1999).

Estanguet won the overall World Cup title in C1 in 2003 and 2004. He also won a total of 10 medals at the European Championships (4 golds, 3 silvers and 3 bronzes).

Together with his brother Patrice, he developed the Pau-Pyrénées Whitewater Stadium (opened in 2008) in their home town of Pau.