This article presents and discusses Accidental Ethnography (AccE), a methodology for practitioners to examine past experiences and contribute their findings to scholarly discourse. Accidental ethnography is the systematic analysis of prior fieldwork. It utilizes extant data “accidentally” gathered (i.e. the data were not collected as part of a predesigned study) to provide insight into a phenomenon, culture, or way of life. The accidental ethnography method—a nascent method in research literature—was developed to provide a means of in-depth exploration of past practitioner learning experiences beyond personal reflection. This article organizes, advances, and systematizes an accidental ethnography method for practitioner–researchers. We propose here a method that encompasses broader intentionality on the part of the researcher and a potentially unorthodox chronology of steps in the ethnographic research process. For practitioners in education, where much is learned through action and reflection, accidental ethnography offers a methodological approach for rigorous reflective research by front-line practitioners who have traditionally had difficulty finding time to make rigorous contributions to the discipline. This article introduces the methodological approach, elaborates the accidental ethnography research process, situates the method within action research methodology, and provides an example of an accidental ethnography project.