The Augustinian friary in Cambridge, England, was founded in the 1280s and dissolved in 1538. Investigations in 1908–9 and 2016–19 have revealed much of the friary cloister, with evidence for an initial late thirteenth–mid-fourteenth-century phase, a major phase of construction in the mid–late fourteenth century and some fifteenth-century construction. This paper will primarily consider what can be reconstructed of the claustral buildings, complemented by what is known of the rest of the friary site. The friary will also be contextualised in terms of mendicant beliefs and anti-fraternal criticisms.