Nakajima was retained by Williams for the 2009 season. At the 2009 Australian Grand Prix he crashed into the wall at turn six, putting him out of the race. Nakajima was the only driver to retire at Bahrain, stopping five laps before the end with overheated oil. He also crashed on the penultimate lap of the Monaco Grand Prix whilst running in 10th place. He came close to scoring at several Grands Prix, including losing a points finish after being delayed in the pit lane at the Turkish Grand Prix. At the British Grand Prix, Nakajima secured his highest ever Formula One grid slot, qualifying in an impressive fifth place ahead of world championship leader Jenson Button. However, his race was compromised by poor pit strategy, and he eventually finished outside the points. Nakajima once again nearly scored at the Hungarian Grand Prix, finishing just 0.7 seconds behind eighth place Jarno Trulli. He finished ninth again in Singapore. At Brazil Nakajima was once again in contention for points until being taken out by rookie and fellow countryman Kamui Kobayashi. Nakajima finished the season having scored no points, with his teammate Nico Rosberg being single-handedly responsible for every championship point scored by the Williams team, with Nakajima being the only non points scorer out of the drivers who took part in each race in 2009.