The 2003–04 Atlanta Thrashers season was the Thrashers' fifth season.
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.
Divisions: AT – Atlantic, NE – Northeast, SE – Southeast Z – Clinched Conference; Y – Clinched Division; X – Clinched Playoff spot
Win (2 points) Loss (0 points) Tie (1 point) Overtime loss (1 point) The Thrashers were involved in the following transactions from June 10, 2003, the day after the deciding game of the 2003 Stanley Cup Finals, through June 7, 2004, the day of the deciding game of the 2004 Stanley Cup Finals.
[18] Atlanta's draft picks at the 2003 NHL entry draft held at the Gaylord Entertainment Center in Nashville, Tennessee.