Penelitian ini bertujuan untuk menganalisis kemampuan literasi sains siswa kelas x masa pandemi covid-19 pada mata pelajaran biologi di sma negeri 1 tarakan menggunakan noslit. metode penelitian menggunakan deskripsi kualitatif. subjek penelitian yaitu siswa sma negeri 1 tarakan kelas x mipa dengan penentuan sampel menggunakan teknik purposive sampling. data diperoleh berdasarkan hasil tes noslit dalam bentuk pilihan ganda dan benar-salah. hasil penelitian didapatkan nilai rata-rata persentase kemampuan literasi sains siswa sebesar 46,11% dari 110 siswa. kemampuan literasi sains pada indikator penamaan ilmiah dengan nilai persentase 38,70%, pada indikator kemampuan keterampilan proses dengan nilai persentase 32,27%, pada indikator kaidah bukti saintifik dengan nilai persentase 61,69%, pada indikator postulat sains dengan nilai persentase 55%, pada indikator disposisi ilmiah dengan nilai persentase 51,27% dan pada indikator miskonsepsi utama tentang sains dengan nilai persentase 37,73%. berdasarkan hasil penelitian dan analisis data, dapat diketahui bahwa kemampuan literasi sains siswa kelas x mipa sma negeri 1 tarakan tergolong rendah dengan nilai rata-rata persentase sebesar 46,11%.

This study aimed to analyze the scientific literacy skills of the tenth grade students during the covid-19 pandemic in biology subject at the sma negeri 1 tarakan using noslit. the research used a qualitative description method. the research subjects were the tenth grade mipa students of the sma negeri 1 tarakan, determined through a purposive sampling techmque. the data obtained from the results of the noslit test was in the form of multiple choice and true-false. the results showed that the average percentage of students' scientific literacy skills was 46.11% of 110 students. scientific literacy ability on the scientific naming indicator with a percentage value of 38.70%, on the process skill ability indicator with a percentage value of 32.27%, on the scientific evidence rule indicator with a percentage value of 61.69%, on the science postulate indicator with a percentage value of 55% , on the scientific disposition indicator with a percentage value of 51.27%, and on the main misconceptions about science indicator with a percentage value of 37.73%. based on the results, it could be seen that the scientific literacy ability of the students was low with an average percentage value of 46.11%.