This paper examines changes in fertility and nuptiality during the first four waves of the COVID-19 pandemic in Hong Kong. Compared to other settings, COVID-19 infection and death rates in Hong Kong were very low until 2022. This was achieved through a combination of top-down interventions (e.g., quarantines, 'mask mandates') and community activation. However, in addition to these epidemiological circumstances, Hong Kong during this period has also undergone significant social and political change stemming from the social movement beginning in 2019 through the enacting, and aftermath, of the National Security Law. In this study, we draw on registered birth and marriage data from 2015 through 2021 to explore how fertility and nuptiality changed after the social movement followed by the first four waves of the COVID pandemic. We describe how fertility and marriage rates have changed in Hong Kong in 2019 and onwards and to what extent the changes are associated with the social movement and the COVID pandemic. We further disaggregate the fertility and nuptiality trends by Hong Kong-born and non-Hong Kong-born population, with a specific focus on migrants from mainland.