After the Bosman ruling in 1995, the cultural diversity of professional football teams in Europe has increased considerably. Recruiting players regardless of their nationality allows football clubs to make use of a global talent pool and to combine the specific strengths of individuals with different cultural backgrounds. At the same time, it confronts them with the challenge of having players who speak different languages and who have different football philosophies ingrained in them. Based on a structure–leadership–performance model, we test the impact of various cultural factors on team success against the background of archival data of 2483 players of 98 clubs in the 5 largest European football leagues (England, France, Germany, Italy, and Spain). We find a negative effect of cultural diversity of the team and of intercultural experience of a coach on team performance. We derive implications for research on multicultural teams and for the management of football teams.