CONMEBOL Libertadores 2023 – Semi-finals (First Leg)

27 September 2023
Fluminense – Internacional
Referee: Dario Herrera (ARG, photo)
Assistant Referee 1: Juan Belatti (ARG)
Assistant Referee 2: Diego Bonfa (ARG)
Fourth Official: Andres Merlos (ARG)
VAR: Mauro Vigliano (ARG)
OVAR: Ezequiel Brailovsky (ARG)
AVAR: Hector Paletta (ARG)
Referee Assessor: Victor Carrillo (PER)
VAR Supervisor: Claudio Rios (CHI)

28 September 2023
Boca Juniors – Palmeiras
Referee: Wilmar Roldan (COL)
Assistant Referee 1: Alexander Guzman (COL)
Assistant Referee 2: Sebastian Vela (COL)
Fourth Official: John Hinestroza (COL)
VAR: Juan Lara (CHI)
OVAR: Edson Cisternas (CHI)
AVAR: Manuel Vergara (CHI)
Referee Assessor: Roberto Silvera (URU)
VAR Supervisor: Wilson Avila (ECU)