This chapter reports a scoping review of research on vocabulary learning in the wild published between January 2010 and November 2021. The aims of the review were to examine the extent of research activity and identify gaps in the existing vocabulary learning in the wild literature. Seventy-three title keywords refined by three Web of Science categories in the SSCI and ESCI databases were searched. The search yielded 257 journal articles, of which 51 met a set of inclusion criteria and were coded. First, the numerical information was used to provide an overall summary of the extent, nature, and distribution of the articles. Then, the literature was organized thematically to synthesize and summarize the articles’ aims and results. The reviewed studies investigated (incidental) vocabulary learning through engagement or the completion of activities; learner factor effects; language input factor effects; effects on variables other than vocabulary knowledge; technology and vocabulary learning; and bridging incidental and intentional vocabulary learning. However, the reviewed studies underrepresented languages other than English and learners at the pre-primary and primary levels of education. There was a paucity of studies that assessed the productive form, productive use, and receptive use aspects of vocabulary knowledge.