Latar belakang: Kehamilan remaja merupakan kondisi dimana remaja putri hamil dibawah usia 20 tahun. Berdasarkan survei Kesehatan Indonesia tahun 2023, sebanyak 26,7% remaja di Indonesia mengalami kehamilan pertama kali. Di Kecamatan Amahai, jumlah ibu hamil usia kurang dari 20 tahun terus meningkat dalam tiga tahun terakhir. Tujuan Penelitian: untuk mengetahui hubungan tingkat pengetahuan dengan sikap remaja putri tentang kehamilan usia dini di Kecamatan Amahai. Metode penelitian: penelitian ini menggunakan metode penelitian kuantitatif jenis korelasional pendekatan cross sectional dengan analisis data univariat dan bivariat menggunakan uji chi-square. Jumlah populasi dalam penelitian ini sebanyak 1.117 remaja putri dan sampel penelitian yaitu 295 remaja putri yang berusia 18-24 tahun dan belum menikah, teknik pengambilan sampel dengan purposive sampling. Instrumen penelitian ini menggunakan kuesioner. Hasil Penelitian: penelitian ini menunjukkan sebanyak 165 responden (55,9%) memiliki tingkat pengetahuan yang baik dan sebanyak 268 responden (90.8%) memiliki sikap yang positif. Hasil uji statistik menunjukkan nilai p = 0,008 (p < 0,05), yang berarti terdapat hubungan antara tingkat pengetahuan dengan sikap remaja putri tentang kehamilan usia dini di Kecamatan Amahai. Rekomendasi: peneliti selanjutnya disarankan untuk meneliti faktor lain seperti lingkungan dan budaya terhadap kehamilan usia dini. Dari penelitian ini, disarankan petugas kesehatan rutin melakukan penyuluhan kepada remaja dan melibatkan orang tua dalam komunikasi terbuka terkait risiko kehamilan usia dini. / Background: Teenage pregnancy is a condition where adolescent girls become pregnant under the age of 20 years. According to the Indonesian Health Survey 2023, 26.7% of adolescents in Indonesia experienced their first pregnancy. In Amahai Sub-district, the number of pregnant women under the age of 20 has continued to increase in the last three years. Research Objective: to determine the relationship between knowledge level and attitude of adolescent girls about early pregnancy in Amahai District. Research methods: This study used quantitative research methods of correlational type cross sectional approach with univariate and bivariate data analysis using chi-square test. The population in this study was 1,117 adolescent girls and the research sample was 295 adolescent girls aged 18-24 years and not married, the sampling technique was purposive sampling. This research instrument uses a questionnaire. Research Results: This study showed as many as 165 respondents (55.9%) had good knowledge and as many as 268 respondents (90.8%) had a positive attitude. The statistical test results showed a p value = 0.008 (p < 0.05), which means there is a relationship between the level of knowledge and the attitude of adolescent girls about early pregnancy in Amahai District. Recommendations: future researchers are advised to examine other factors such as environment and culture towards early pregnancy. From this study, it is recommended that health workers routinely conduct counseling to young women.