Abstract: The goal of this study is to develop e-learning media based on Moodle for atomic structure material, as well as to determine the feasibility of the media and the teachers response to it. With the ADDIE method derived from Dick and Carrey, this study is included in Research and Development (R and D). Media experts, materials experts, and chemistry teachers are among the studys subjects. Expert validation questionnaires and teacher response questionnaires. The studys findings were that e-learning media based on moodle on atomic structure material had a media feasibility score of 92.8 percent with very feasible criteria and a material feasibility score of 91.7 percent with very feasible criteria. The responses chemistry teachers from Langsa Senior High School yielded an average of 87 percent with very interesting criteria. On the basis of these findings, it can be stated that the Moodle-based e learning media designed for the atomic structure material is suitable for use in the learning process.Keywords: e-learning, learning media, moodle, development, atomic structure Abstrak: Penelitian ini bertujuan untuk mengembangkan media pembelajaran e-learning berbasis moodle pada materi struktur atom dan mengetahui kelayakan media serta mengetahui respon guru terhadap media pembelajaran yang dihasilkan. Penelitian ini termasuk dalam penelitian dan pengembangan atau Research and Developmen (R and D) dengan metode ADDIE yang diadaptasi dari Dick and Carrey. Subjek penelitian adalah ahli media, ahli materi dan guru kimia. Teknik pengumpulan data yang digunakan adalah angket validasi ahli dan angket respon guru. Hasil penelitian berupa media pembelajaran e-learning berbasis moodle pada materi struktur atom dengan penilaian kelayakan media sebesar 92,8 persen dengan kriteria sangat layak dan penilaian kelayakan materi sebesar 91,7 persen dengan kriteria sangat layak. Hasil respon guru kimia di SMA Negeri Langsa menunjukkan presentase rata-rata 87 persen dengan kriteria sangat menarik. Berdasarkan hasil tersebut, dapat disimpulkan bahwa media pembelajaran e-learning berbasis moodle pada materi struktur atom yang dikembangkan layak digunakan dalam proses pembelajaran.Kata kunci : e-learning, media pembelajaran, moodle, pengembangan, struktur atom.