Latar Belakang: Pernikahan usia dini merupakan pernikahan yang terjadi sebelum usia 18 tahun. Dukungan keluarga akan memberikan dampak positif pada perkembangan remaja untuk mencegah pernikahan usia dini. Tujuan : Mengetahui Hubungan Dukungan Keluarga Dengan Motivasi Remaja Dalam Pencegahan Pernikahan Usia Dini di SMA Negeri 1 Abang Karangasem. Metode: Desain penelitian menggunakan analitik correlative dengan pendekatan cross-sectional. Sampel berjumlah 253 responden menggunakan teknik simple random sampling. Instrumen penelitian menggunakan kuesioner. Analisa data menggunakan uji Spearman Rank (Rho). Hasil: Hasil uji Spearman Rank (Rho) menunjukkan terdapat hubungan dukungan keluarga dengan motivasi remaja dalam pencegahan pernikahan usia dini dengan pvalue 0,000

Background: Indonesia remains among the top 10 countries in the world for early marriage instances in 2022 with 1.74 million marriages. Family support is still a significant factor in the case of early marriage and plays a useful role in encouraging young people to get married young. Purpose: To determine the correlation between family support and motivation of adolescents in preventing early marriage at SMA Negeri 1 Abang Karangasem. Method: This study used analytic correlation with cross sectional approach. There were 253 respondents recruited as sample of the study which were selected through random sampling technique. The data were collected using Perceived Social Support from Family (PSS-Fa) questionnaire and motivation questionnaire. The data were analyzed using Spearma’s rho. Result: The finding showed that there was a correlation between family support and motivation of adolescents in preventing early marriage with a p-value of 0.001 with a closeness of 0.382 and a positive correlation (+), meant that the better the family support, the higher the motivation of adolescents in preventing early marriage. Conclusion: There is a correlation between family support and motivation of adolescents in preventing early marriage at SMA Negeri 1Aabang Karangasem Keywords: Famaily Support, Motivation of Adolescents, Prevention, Early Marriage