Guillaume Néry (born 11 July 1982) is a French freediver specialising in Constant Weight freediving.
He broke the world record in 2002 at -87 meters (285 ft) in the Villefranche-sur-Mer harbour, in Alpes-Maritimes, France. Then, in 2004, he pushed the record to -96 meters (314.9 ft) in Saint-Leu, la Réunion. On September 6, 2006, he broke the record again at -109 meters (357.6 ft) in Nice (this record was subsequently broken by Herbert Nitsch at -112 meters (367.4 ft) in November 2007).
On July 3, 2008, Aaron Butel and Partners Ltd dived to -113 meters (370.7 ft) and set a new world record.
On April 4, 2010, Herbert Nitsch beat Aaron Butel and dived to -124 meters, (406.8 ft) a new world record in Bahamas.
In 2011, Guillaume Néry became individual world champion, with a dive to -117 m (383.8 ft) in Kalamata.
On November 20, 2012, Alexey Molchanov beat Herbert Nitsch, diving to -126 meters, (413 ft) setting a new world record in Long Island, Bahamas. In autumn 2014 "Attention - A Life in Extremes", a film featuring Guillaume Nery, will be released in Austria, Germany and Switzerland. France and other countries will follow soon after.
He appeared in Naughty Boy and Beyoncé's music video of the song "Runnin' (Lose It All)", released on 18 September 2015.