The Netherlands Open Chess Championship 2009 took place between July 21st and July 30th.

Round 1 - July 21st Klein - Ernst 1/2 L'Ami - Van Veen 1-0 Sprangers - Timman 1/2 Vovk - Laarhoven 1-0 Van Helvoort - Reinderman 1/2 Ikonnikov - Van der Velden 1-0	Round 2 - July 22sd Pruijssers - L'Ami 0-1 Wohl - Vovk 1/2 Van Delft - Ikonnikov 1/2 Nijboer - Van Eijk 1-0 Bezemer - Giri 0-1 Swinkels - Van Assendelft 1-0
Round 3 - July 23rd L'Ami - Lalith 1-0 Visser - Nijboer 1/2 Giri - Brandenburg 1-0 Miedema - Swinkels 1/2 Vovk - Shyam 1-0 Burg - Adhiban 1/2	Round 4 - July 24th Giri - L'Ami 1-0 Timman - Vovk 1-0 Adhiban - Ernst 1/2 Reinderman - Visser 1/2 Wohl - Ikonnikov 1/2 Nijboer - Bosch 1-0
Round 5 - July 25th Nijboer - Giri 0-1 Miedema - Timman 1/2 Ernst - Hendriks 1-0 L'Ami - Shyam 1-0 Vovk - Bezemer 1-0 Bitalzadeh - Reinderman 1/2	Round 6 - July 27th Giri - Ernst 1/2 Adhiban - L'Ami 0-1 Timman - Ikonnikov 1-0 Vovk - Miedema 1/2 Reinderman - Burg 1-0 Wohl - Nijboer 0-1
Round 7 - July 28th Timman - Giri 1/2 L'Ami - Vovk 1-0 Ernst - Brandenburg 1/2 Miedema - Reinderman 1-0 Nijboer - Ootes 0-1 Visser - Swinkels 1-0	Round 8 - July 29th Visser - L'Ami 0-1 Giri - Miedema 0-1 Ootes - Timman 0-1 Bezemer - Ernst 1/2 Brandenburg - Ikonnikov 1-0 Lalith - Bitalzadeh 1-0
Round 9 - July 30th L'Ami - Timman 1/2 Miedema - Brandenburg 1/2 Lalith - Giri 0-1 Ernst - Wohl 1-0 Ootes - Reinderman 1-0 Bezemer - Visser 1/2