The 2006 SAP Open was a men's tennis tournament held at the HP Pavilion in San Jose, United States that was part of the International Series of the 2006 ATP Tour. It was the 118th edition of the tournament and was held from February 13 through February 19, 2006. Unseeded Andy Murray won the single title.

Andy Murray defeated Lleyton Hewitt 2–6, 6–1, 7–6^(7–3)

• It was Murray's only singles title of the year and the 1st of his career.

Jonas Björkman / John McEnroe defeated Paul Goldstein / Jim Thomas 7–6^(7–2), 4–6, [10–7]

• 2006 SAP Open tournament draws (Singles / Doubles)