The present study examined the quality of teacher–child relationships in a collectivist and individualist country, specifically, Portugal and Belgium. Two relationship dimensions were examined the following: conflict and closeness. Participants were 158 Portuguese and 197 Belgian children and their teachers. In both countries, teachers completed the Student–Teacher Relationship Scale (STRS). Measurement invariance was tested through multiple-group analysis. The results supported configural and metric invariance across countries, but not full scalar equivalence, suggesting that the STRS is robust across countries. Some associations differed between the samples. Specifically, teachers’ perceptions of closeness were negatively related to conflict in Belgium, but not in Portugal. Teachers described boys and girls as having similar levels of both conflict and closeness in Portugal, while in Belgium girls are likely to have closer relationships with their teachers. Moreover, observed emotional climate was positively associated with closeness in Belgium (but not Portugal), indicating that Belgian teachers in classrooms with more warm and positive interactions were likely to have closer individual relationships with their students.