Petter Christian Grüner Sundt (9 April 1945 – 28 November 2007) was a Norwegian shipping magnate and businessman.
after his grandfather Sigval Bergesen the Younger retired for health reasons.
Ten years later Morten Bergesen and Petter Sundt took over ownership control and listed the company.
Sundt received two billion kr (approximately US$368 million) for his shares in Bergesen d.y.
In 1983 he was decorated as a Commander of the Order of the Lion of Finland, together with Brynjulf and Morits Skaugen and Gjert and Arne Wilhelmsen.