Research suggests that expressions of Celtic spirituality are widespread among the U.S. populace (e.g., Pew Research Center, 2014; Sullivan, 2016). Adherents vary in their commitment levels, ranging from informal cultural participants to followers of structured forms of the faith tradition (e.g., Celtic Christianity, Wicca, Paganism). The counseling literature provides scant information on this movement and germane approaches to support clients who identify with this spirituality. To respond to this deficiency, we address the topic by contextualizing Celtic spirituality from definitional, historical, and thematic perspectives. Next, we consider implications for spiritually sensitive counseling practice. We include a case study, exemplifying potential adaptive counseling processes and interventions.