%V 43 %A Alan Latham %A Jack Layton %J Urban Geography %O © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/). %D 2022 %N 5 %T Social infrastructure: why it matters and how urban geographers might study it %L discovery10151886 %P 659-668 %K Social infrastructure, infrastructure, urban geography, public space, sociality, public space %I ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD %X Social infrastructure is an emerging research frontier in urban geography and urban studies. This editorial introduction provides a concise introduction to the term. It briefly sets out the intellectual provenance of the concept of social infrastructure, examining the different ways social infrastructure is being used across urban geography.