This chapter explores the application of corpora and corpus linguistics in forensic contexts. It documents the use of corpus methods in the field, particularly the relatively slow uptake of such approaches, despite some of the earliest and most important work relying on such approaches. Using recent corpus studies as examples, it summarises the main benefits that large datasets and corpus linguistic techniques hold for forensic linguists. The main part of the chapter draws on three research case studies to highlight important considerations when building corpora for forensic linguistics and to demonstrate the ways in which established corpus techniques and methods can assist in the analysis of forensically-relevant language data.