In this article, I develop a novel relational egalitarian theory of social exclusion that explains how society fails to treat socially excluded individuals – such as people experiencing homelessness, individuals with substance use disorders and mental illness and sex workers – as equals. I argue that society places and keeps excluded individuals at the very bottom of the social status hierarchy by treating them as socially invisible, or by rendering them physically invisible, or both. The upshot, then, is that part of what is wrong with social exclusion is that it creates the invisible social class.