The passage of Hong Kong’s new National Security Law raises concerns around restricted space for non-profit actors in Hong Kong. In the month since its enactment, civil society actors have fled the city, taken down writings and social media accounts, and scrambled to adapt to the new reality. The Law portends a substantial change from the previous environment for civil society in Hong Kong. It will likely have major impacts on the ability of residents to engage in peaceful protest and civic activism. The Law’s wide-ranging effects may extend globally to individuals and institutions operating outside Hong Kong and China, and could heavily curtail international engagement in Hong Kong.