The 2003–04 San Jose Sharks season was the franchise's 13th in the NHL.
The Sharks made it to the Western Conference Finals for the first time before losing to the Calgary Flames.
[1] At the entry draft in June, the Sharks chose Milan Michalek with their first-round pick, sixth overall.
The Sharks rotated team captaincy every ten games for the first half of the season before permanently handing the role to forward Patrick Marleau.
[2] Note: CR = Conference rank; GP = Games played; W = Wins; L = Losses; T = Ties; OTL = Overtime loss; GF = Goals for; GA = Goals against; Pts = Points Bolded teams qualified for the playoffs.