The 2003–04 Colorado Avalanche season was the Avalanche's ninth season. For the first time since moving to Colorado, the Avalanche did not win their division. They defeated the Dallas Stars in the Quarterfinal round, but lost in the Semifinal round to the San Jose Sharks.
Offseason
Regular season
Final standings
Playoffs
Schedule and results
Regular season
|- align="center" bgcolor="#CCFFCC" |1||W||October 10, 2003||5–0 || align="left"| Chicago Blackhawks (2003–04) ||1–0–0–0 || |- align="center" bgcolor="#FFBBBB" |2||L||October 12, 2003||1–2 || align="left"| St. Louis Blues (2003–04) ||1–1–0–0 || |- align="center" bgcolor="#CCFFCC" |3||W||October 16, 2003||5–2 || align="left"| @ Minnesota Wild (2003–04) ||2–1–0–0 || |- align="center" bgcolor="#FFBBBB" |4||L||October 18, 2003||3–6 || align="left"| @ Edmonton Oilers (2003–04) ||2–2–0–0 || |- align="center" bgcolor="#FFBBBB" |5||L||October 21, 2003||1–4 || align="left"| Boston Bruins (2003–04) ||2–3–0–0 || |- align="center" bgcolor="#CCFFCC" |6||W||October 23, 2003||6–1 || align="left"| Edmonton Oilers (2003–04) ||3–3–0–0 || |- align="center" bgcolor="#CCFFCC" |7||W||October 25, 2003||5–3 || align="left"| @ Nashville Predators (2003–04) ||4–3–0–0 || |- align="center" bgcolor="#FFBBBB" |8||L||October 26, 2003||1–3 || align="left"| Buffalo Sabres (2003–04) ||4–4–0–0 || |- align="center" bgcolor="#CCFFCC" |9||W||October 28, 2003||4–2 || align="left"| Calgary Flames (2003–04) ||5–4–0–0 || |-
|- align="center" bgcolor="#FFBBBB" |10||L||November 1, 2003||3–4 || align="left"| @ New Jersey Devils (2003–04) ||5–5–0–0 || |- align="center" bgcolor="#CCFFCC" |11||W||November 2, 2003||3–2 OT|| align="left"| @ New York Rangers (2003–04) ||6–5–0–0 || |- align="center" |12||T||November 4, 2003||4–4 OT|| align="left"| Minnesota Wild (2003–04) ||6–5–1–0 || |- align="center" bgcolor="#CCFFCC" |13||W||November 6, 2003||2–1 || align="left"| Phoenix Coyotes (2003–04) ||7–5–1–0 || |- align="center" bgcolor="#CCFFCC" |14||W||November 9, 2003||4–3 OT|| align="left"| @ Chicago Blackhawks (2003–04) ||8–5–1–0 || |- align="center" bgcolor="#CCFFCC" |15||W||November 11, 2003||4–3 || align="left"| @ San Jose Sharks (2003–04) ||9–5–1–0 || |- align="center" bgcolor="#FF6F6F" |16||OTL||November 13, 2003||2–3 OT|| align="left"| @ Phoenix Coyotes (2003–04) ||9–5–1–1 || |- align="center" bgcolor="#CCFFCC" |17||W||November 15, 2003||3–0 || align="left"| Dallas Stars (2003–04) ||10–5–1–1 || |- align="center" bgcolor="#CCFFCC" |18||W||November 18, 2003||2–1 OT|| align="left"| Mighty Ducks of Anaheim (2003–04) ||11–5–1–1 || |- align="center" bgcolor="#CCFFCC" |19||W||November 20, 2003||4–3 || align="left"| New York Rangers (2003–04) ||12–5–1–1 || |- align="center" bgcolor="#FFBBBB" |20||L||November 22, 2003||0–2 || align="left"| Los Angeles Kings (2003–04) ||12–6–1–1 || |- align="center" bgcolor="#FFBBBB" |21||L||November 24, 2003||2–3 || align="left"| Nashville Predators (2003–04) ||12–7–1–1 || |- align="center" bgcolor="#CCFFCC" |22||W||November 27, 2003||6–5 OT|| align="left"| @ Calgary Flames (2003–04) ||13–7–1–1 || |- align="center" bgcolor="#CCFFCC" |23||W||November 28, 2003||4–1 || align="left"| @ Edmonton Oilers (2003–04) ||14–7–1–1 || |- align="center" |24||T||November 30, 2003||1–1 OT|| align="left"| New Jersey Devils (2003–04) ||14–7–2–1 || |-