Despite global calls for stronger linkages between family planning and HIV, a growing body of evidence in sub-Saharan Africa suggests that the integration of family planning and HIV service delivery is suboptimal in some countries. In this study, we assess the integration and quality of family planning services in health facilities that provide HIV-related services in Nigeria. This study analysed secondary data from the Performance Monitoring and Accountability 2020 cross-sectional survey conducted between May and July 2016 in seven states in Nigeria. Family planning services were integrated into HIV services in a majority of the health facilities in our study. However, our findings indicate the need for improvement in the quality of family planning services provided to clients accessing HIV services.