The 2003–04 Michigan State Spartans men's basketball team represented Michigan State University in the 2003–04 NCAA Division I men's basketball season. The Spartans played their home games at Breslin Center in East Lansing, Michigan. They were coached by Tom Izzo in his ninth year as head coach. MSU finished the season with a record of 18–12, 12–4 to finish in a tie for second place in Big Ten play. The Spartans received a bid to the NCAA tournament for the seventh consecutive year where they lost in the First Round to Nevada.