<p>Objective　Various types of health promotion organizations exist in Japan, including volunteer organizations that promote healthy diets, health improvement, and maternal and child health. Health promotion volunteers, trained and recruited by municipalities, provide counseling and education on various health concerns to community members. A previous study on the effect of these activities and the organizational challenges demonstrated a decrease in the number of volunteer members. The present study aimed to identify the organizational characteristics and challenges of health promotion volunteer work in Japan to gain insight into volunteer recruitment and organizational management.</p><p>Methods　A questionnaire was sent to 1,873 Japanese municipalities via e-mail or postal mail (excluding Tokyo's 23 wards). For cities of cabinet order, a questionnaire was sent to each borough in the municipality. Data were collected from February to March 2017. The survey was used to collect data on four types of health promotion volunteer organizations: healthy diet (organizations of volunteers who were shokuseikatsu kaizen suishinin), health improvement (organizations of volunteers who were kenkozukuri suishinin), and two types promoting maternal and child health (organizations of volunteers who were boshihoken suishinin and aiikuhan). We asked about the presence or absence of the organization type, year of establishment, number of members, the largest age group, recruitment methods, etc. Twelve organizational challenges were measured with a six-item Likert scale (from 1=“strongly agree” to 6=“strongly disagree”). Proportions of active members in the volunteer organization ranged from 0% to 10%.</p><p>Results　Eight hundred eight municipalities responded to the survey (valid responses: 805, valid response rate: 43.1%). The presence or absence of the four types of volunteer organizations differed among the municipalities. The most common type was organizations of volunteers who were shokuseikatsu kaizen suishinin (84.7% municipalities), followed by kenkozukuri suishinin (64.3%), boshihoken suishinin (26.4%), and aiikuhan (10.1%). The total ratio of responses of “strongly agree,” “agree,” and “somewhat agree” about the organizational challenges, including “The organization cannot find new members easily” and “The participants are always the same people,” was commonly more than 50% for the four types of volunteer organizations. The challenges, including “Many do not enjoy what they do,” “For many volunteers, participation is limited due to work and family obligations,” and “The goal of the activities is not widely shared among volunteers,” were significantly correlated to the proportion of active members in the volunteer organization for all four types of organizations.</p><p>Conclusion　This study revealed that organizational characteristics differed among the four types of health promotion volunteer organizations; however, many of the organizational challenges were found to be common throughout Japanese municipalities.</p>