Objectives: To recommend (1) the adoption of optimal terminology for referring to services in the United States that incorporate horses and other equines to benefit people, and (2) the discontinuation of especially problematic terminology. Design: A diverse multidisciplinary consortium of individuals, including representatives of relevant national organizations, participated in an inclusive, systematic, and comprehensive 2-year consensus-building process. Results: Twelve specific types of services were identified that relate to one of three broad areas of professional work: therapy, learning, or horsemanship. Related to the area of therapy, five distinct types of therapies were identified: counseling, occupational therapy, physical therapy, psychotherapy, and speech-language pathology. Therapy-first language is recommended that foregrounds the exact therapy (e.g., physical therapy) and adds precise equine-related descriptors as warranted (e.g., physical therapy using equine movement). Related to the area of learning, three distinct types of nontherapy services were identified. The recommended terminology for referring to these services is equine-assisted learning in education, equine-assisted learning in organizations, and equine-assisted learning in personal development. Related to the area of horsemanship, four distinct types of nontherapy services were identified. The recommended terminology for referring to these services is adaptive equestrian sports, adaptive riding or therapeutic riding, driving, and interactive vaulting. The plural term, equine-assisted services, is recommended as a concise shorthand for easily referencing multiple services that differ from each other, yet share the horse as a common thread. Terms recommended for discontinuation include equine therapy, equine-assisted activities and therapies, equine-assisted therapy, equestrian therapy, hippotherapist, hippotherapy clinic (program), horse therapy, horseback riding therapy, and therapy riding. The consensus-building process culminated in extensive but not unanimous endorsements of all terminology recommendations. Conclusions: Terminology recommended for adoption clearly describes and distinguishes 12 distinct types of services. Terminology recommended for discontinuation was found to be ambiguous, misleading, no longer useful, or to have adversely affected stakeholders. It is hoped that all recommendations will prove useful and