The purpose of this descriptive research was to identify the predicting factors of commitment to sexual abstinence among Thai female early adolescents. The study sample consisted of 432 secondary school students whose ages were between 12-15 years. They were selected by multistage random sampling. The instruments included perceived benefits of sexual abstinence, perceived barriers to sexual abstinence, perceived sexual abstinence self-efficacy, parental influence, peer influence and commitment to sexual abstinence questionnaires. All questionnaires were tested for content validity. Their CVIs were .86, .95, .89, .89, .80 and.80, respectively. Their Cranach’s coefficients were 93, .92, .92, .90, .94 and.86, respectively. Data were analyzed by using descriptive statistics, Pearson’s product moment correlation, and stepwise multiple regression. It was found that: 1. The majority of female early adolescents (89.6%) had high level of commitment to sexual abstinence. 2. Predictors of commitment to sexual abstinence among Thai female early adolescents were parental influence (β=.359), perceived self-efficacy (β=.218), perceived benefits (β=.107) and perceived barriers (β=-.082). These four predictors accounted for 34.6 percent of variance of the commitment to sexual abstinence (R2 = .346, p < .05).