Abstract: Veganism, a philosophy and practice constituting the eschewal of all animal-derived products and forms of animal exploitation, has grown exponentially in the UK over the past decade, including among individuals of faith. This phenomenon has been increasingly studied within social science, but there is one area that is noticeably absent in existing scholarship: how religion intersects with veganism. Given the perceived centrality of animal bodies to Abrahamic religious observance, coupled with potential ethical similarities between veganism and religion as possible guiding forces in an individual’s life, this intersection is pertinent to study. I ask, how are Muslim, Jewish, and Christian vegans reshaping and redefining veganism and religiosity in late modern Great Britain? I recruited 36 UK-based vegans identifying as either Muslim, Jewish, or Christian, and conducted a multi-modal qualitative methods study in 2021, comprising interviews, diary methods, and virtual participant observation. I then thematically analysed the data, drawing on theories relating to Bourdieusian sociology, reflexive religiosity, and embodied ethics and values. This research reveals that religion and veganism are often mutually constituted, with veganism being understood by faith vegans as an ethical lifestyle that may be incorporated into their religious lifestyles. Religious ethics, values, and principles are reflexively interrogated, enabling participants to bring together faith and veganism. However, for many, religion is non-negotiable, so specific knowledge and support is sought to aid the negotiations that take place around religious practice. Through reflexive religiosity, religious practice becomes veganised, whilst veganism becomes faith based. I develop a series of concepts that help explain the characteristics of faith veganism, such as faith vegan identity, faith vegan community, faith vegan ethics, and faith vegan stewardship, as well as contribute new ways of theorising veganism: as transformative, mobile, reflexive, and more-than-political. Thus, this empirical study offers a new understanding of veganism, one that intersects with and is underpinned by religion, and which I term faith veganism.