The aim of this cross-sectional study was to determine and investigate the association of basic characteristics and employment status with job satisfaction among registered dietitians and dietitians throughout Japan. An internet survey was conducted in November 2018. Data from 15,133 individuals, all requiring employment qualification, were analyzed. The basic characteristics were evaluated by asking the following：gender, age, educational background, work location, having membership in the Japan Dietetic Association （JDA）or not, and number of training sessions attended. As for the employment status, the following questions were asked：qualifications obtained, employed or not, employment qualification, qualification allowance, preferential treatment, type of employment, work place, years worked, and annual income. Job satisfaction was assessed using a five-item scale. The total score of the scale showed that 73.9% of the respondents were satisfied with their jobs. The high level of job satisfaction was associated with older age, higher education, work location, having membership in JDA, participation in training sessions, in possession of a registered dietitian certification, having preferential treatment such as a salary increase system, more years worked, higher annual income, and work place（all p <0.05）. Due to issues related to the representativeness of the sample, a follow-up study by random sampling with limited attributes is also needed.

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