ABSTRACT The current study assessed the family correlates of problematic Internet use (PIU) in a nationally representative sample of Saudi adolescents. Students (grades: 7–12; N = 2,546) from three cities in Saudi Arabia (random selection of schools) filled out a survey on Young’s Internet Addiction Test (YIAT) and family characteristics (e.g. parents’ socioeconomic status [SES], family harmony, family members’ Internet use, and parental Internet controls). A multilevel log-binomial regression assessed family correlates of PIU (YIAT ≥40). The mean (SD) age was 15.6 (±1.8) years; 54% were girls; PIU prevalence was 41.8%. A poor SES (OR = 1.2, 95% CI 1.0, 1.4), low family harmony (bottom quartile OR = 1.4, 95% CI 1.2, 1.7), no parental restriction/supervision (OR = 1.4, 95% CI 1.2, 1.8), and heavy Internet use by siblings (OR = 1.3, 95% CI 1.1, 1.5) were significantly associated with PIU. Certain identified family risk factors are amenable to interventions given the high PIU prevalence among Saudi adolescents.