Social infrastructure refers to the physical facilities and spaces that support community wellbeing and social connection, including community centres, recreation facilities, libraries, affordable housing, childcare centres, seniors' facilities, and gathering spaces. Unlike traditional infrastructure focused on utilities and transportation, social infrastructure directly supports quality of life and community cohesion. Federal infrastructure funding programs increasingly recognize social infrastructure alongside physical infrastructure. Municipalities plan and deliver much social infrastructure, with facilities like community centres serving as neighbourhood hubs for programs, services, and community gathering. Investment in social infrastructure is linked to public health outcomes, social equity, and community resilience, though it competes with other infrastructure priorities for limited funding.