The commitment of volunteers is critical to the effective organization and delivery of community-based sport. This paper examined the development of organizational commitment amongst volunteers in relation to several organizational factors and personal characteristics. Using data from a 3-wave longitudinal study of volunteer administrators (n = 328) drawn from 52 randomly selected community-based sport organizations, organizational commitment was examined in relation to a range of variables including personal characteristics (sociodemographics), behavioral commitment, volunteering benefits, structural attributes (organizational size, budget), and process characteristics operationalized as perceptions about committee functioning. Using hierarchical regression analysis, the study found evidence of a directional relationship between perceived committee functioning and organizational commitment. Organizational commitment was also predicted by age group, occupation, years of organizational membership, and time spent on administration. The study demonstrated a temporal relationship between committee functioning and organizational commitment and concluded with a discussion of practical implications and recommendations for further research.