The first match of the UEFA Champions League for the 2025-26 season, which includes the qualifying rounds, kicks off with the first qualifying round games on July 8 and 9, 2025. These initial matches are part of the early phase before the league phase starts later in the year. The league phase itself begins on September 16-18, 2025.
If the question is about the very first Champions League game ever played, the European Cup (now Champions League) first match took place on September 4, 1955, between Sporting CP and Partizan, which ended in a 3–3 draw.
Let me know if you want more details on any specific season or phase of the Champions League.
