Using data from the National Longitudinal Study of Adolescent Health, this study examined the associations among family bonding factors and the initiation of smoking by race/ethnicity and age group among nonsmokers at Wave 1. Overall, 18 percent of the sample initiated smoking by Wave 2. For younger African-American and Hispanic youths, high maternal satisfaction with the relationship was significantly protective of smoking initiation. For older Hispanics, high parental presence and high parent-family connectedness were protective against smoking initiation, while lack of awareness about the adolescent's whereabouts was a risk factor for initiation in both younger and older Caucasians, and in the older Hispanics. The results underscore the importance of maintaining high levels of family bonding with the adolescent throughout early and late adolescence in order to decrease tobacco initiation. (Published Abstract)