Olaf Gunderson is a fictional character in the 1997 film Titanic. He was a Swede, friend of Sven. They played poker with Jack Dawson and Fabrizio de Rossi shortly before the departure of RMS Titanic. After they lost their tickets for the RMS Titanic to Dawson, Olaf grasped him by the neck and landed a punch on Sven.