The horse was ubiquitous in the Viking Age. Horses were physically present as a means of transportation, draught animals, high-value commodities, and/or non-human companions. They also loomed large in the mindscapes of the Viking Age as symbols of fertility and prestige, key characters in the stories people told, and the subjects of artistic endeavours ranging from poetry to tapestry to inscription. This chapter explores the ways that horses played a role in magic practices and wider rituals at the intersection of these physical and conceptual spheres. Taking an interspecies approach to these rituals, it will pay particular attention to questions of personhood, participation, and agency, and comment on some gendered aspects of these acts. This chapter adopts an interdisciplinary approach, drawing on Viking Age poetry, iconography, and archaeological remains to explore the horse as both ritual object and subject, and asks whether the lines between horse as companion, and horse as ritual actor can be drawn so distinctly.