The 2003–04 Tampa Bay Lightning season was the 12th National Hockey League season in Tampa, Florida. The Lightning won their first Stanley Cup over the Calgary Flames this season, after the Flames were attempting to be the first Canadian team to win a Stanley Cup since the 1993 Montreal Canadiens. The Lightning's 1st Stanley Cup championship came just a year after their NFL (National Football League) counterparts, the Tampa Bay Buccaneers, won Super Bowl XXXVII, also their 1st championship.

Offseason

The Lightning did not have a first-round pick. For their first pick, they chose Mike Egener in the second round, 35th overall.

Regular season

On Saturday, December 27, 2003, the Lightning scored three short-handed goals in a 4–2 win over the Boston Bruins. The Lightning finished the regular season having tied the Detroit Red Wings for the most short-handed goals scored, with 15.

Season standings

Playoffs

Schedule and results

Regular season

Playoffs

Player statistics

Scoring

Goaltending

Awards and records

Awards

Milestones

Transactions

The Lightning 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.

Trades

Players acquired

Players lost

Signings

Draft picks

Tampa Bay's draft picks at the 2003 NHL entry draft held at the Gaylord Entertainment Center in Nashville, Tennessee.