This study examined the role of social support and behavioural interventions used during the last unsuccessful quit attempt for smokers’ intentions to quit smoking within the next six months, and identified smokers’ attributes associated with the use of social support and behavioural interventions. The analytic sample included 7,195 adult daily smokers who responded to the 2010–2011 Tobacco Use Supplement to the Current Population Survey, conducted in the United States, and indicated having a serious quit attempt in the past 12 months. Smokers who relied on social support from friends and family had higher odds of intending to quit than those who did not (OR = 1.39, 95% CI = 1.22:1.58), and smokers who used interventions had higher odds of intending to quit than those who did not (OR = 1.36, 95% CI = 1.07:1.74). These associations were similar for both sexes, all age groups, and nicotine dependence levels. Both, relying on social support and the use of behavioural interventions were more common among smokers who were female, higher educated, residing in the Western US region, and those who used pharmacological aids for smoking cessation. Social support and behavioural interventions are associated with higher intentions to quit among attempters who relapsed and thus, may aid future smoking cessation.