2023 Fluminense FC season

The 2023 season was Fluminense's 122nd season in the club's history. Fluminense competed in the Campeonato Carioca, Copa do Brasil, Série A, Copa Libertadores and FIFA Club World Cup.

Overall
{|class="wikitable"
 * Games played || 72 (15 Carioca, 4 Copa do Brasil, 13 Copa Libertadores, 38 Série A, 2 Club World Cup)
 * Games won || 37 (10 Carioca, 2 Copa do Brasil, 8 Copa Libertadores, 16 Série A, 1 Club World Cup)
 * Games drawn || 13 (1 Carioca, 1 Copa do Brasil, 3 Copa Libertadores, 8 Série A, 0 Club World Cup)
 * Games lost || 22 (4 Carioca, 1 Copa do Brasil, 2 Copa Libertadores, 14 Série A, 1 Club World Cup)
 * Goals scored || 115
 * Goals conceded || 74
 * Goal difference || +41
 * Best result (goal difference) || 7–0 (H) v Volta Redonda – Carioca – 2023.03.18
 * Worst result (goal difference) || 0–4 (A) v Manchester City – Club World Cup – 2023.12.22
 * Top scorer || Germán Cano (40)
 * Goals conceded || 74
 * Goal difference || +41
 * Best result (goal difference) || 7–0 (H) v Volta Redonda – Carioca – 2023.03.18
 * Worst result (goal difference) || 0–4 (A) v Manchester City – Club World Cup – 2023.12.22
 * Top scorer || Germán Cano (40)
 * Best result (goal difference) || 7–0 (H) v Volta Redonda – Carioca – 2023.03.18
 * Worst result (goal difference) || 0–4 (A) v Manchester City – Club World Cup – 2023.12.22
 * Top scorer || Germán Cano (40)
 * Top scorer || Germán Cano (40)
 * Top scorer || Germán Cano (40)