注册营养师营养师（RDN）是一位食品和营养专家，已达到学术和专业领域的最低要求，才有资格参加营养师注册考试。注册营养师营养师的工作环境多种多样，包括但不限于医院，HMO，私人执业，保健设施，社区和公共卫生，食品和营养行业，商业，运动营养，公司健康计划，学术界和研究。
The Registered Dietitian Nutritionist (RDN) is a food and nutrition expert who has met the minimum academic and professional requirements to qualify for the Registration Examination for Dietitians. Registered dietitian nutritionists work in a variety of settings that include, but are not limited to, hospitals, HMOs, private practice, health-care facilities, community and public health, food and nutrition industry, business, sports nutrition, corporate wellness programs, academia, and research.