Students who return to their home country after studying abroad often experience feeling foreign and require readaptation to their home culture. This re-entry experience, known as reverse culture shock, is seen as an unexpected challenge by many returnees. This research aims to investigate the relationship between Mattering to Peers and Reverse Culture Shock among Indonesian students who returned to Indonesia after studying abroad. Quantitative data was collected using Mattering to Peers Scale (MTPS) and Reverse Culture Shock Scale (RCSS) by distributing questionnaires. Participants of this research are 100 returnees who came back to Indonesia post to their study abroad, with age ranging from 17 to 40. The result shows a significantly negative correlation between Mattering to Peers and Reverse Culture Shock (r (100) = -.524***, p < .001). The strongest correlation is found between awareness and reverse culture shock, among other dimensions of mattering to peers. Higher mattering to peers score has the strongest association with grief in reverse culture shock. According to the findings, students who returned to Indonesia after studying abroad require help in developing perception of significance toward their peers, which can be done by helping them connect to a caring and supportive social network./ Setelah menempuh pendidikan di luar negeri, mahasiswa yang kembali ke negara asalnya seringkali mengalami rasa asing dan membutuhkan proses beradaptasi kembali dengan budaya asalnya. Pengalaman kepulangan yang disebut sebagai reverse culture shock ini menjadi tantangan yang tidak diekspektasikan oleh mayoritas individu. Penelitian ini bertujuan untuk menyelidiki hubungan antara Mattering to Peers dan Reverse Culture Shock pada mahasiswa Indonesia yang kembali ke Indonesia pasca berkuliah di luar negeri. Perolehan data kuantitatif menggunakan instrumen Mattering to Peers Scale (MTPS) dan Reverse Culture Shock Scale (RCSS) melalui penyebaran kuesioner. Partisipan yang terlibat berjumlah 100 individu yang baru kembali ke Indonesia setelah berkuliah di luar negeri, dengan rentang usia 17-40 tahun. Hasil penelitian menunjukkan adanya korelasi negatif yang signifikan antara variabel Mattering to Peers dan Reverse Culture Shock (r (100) = -.524***, p < .001). Dimensi awareness dalam mattering to peers memiliki korelasi negatif paling kuat dengan reverse culture shock. Tingginya mattering to peers diasosiasikan paling kuat dengan rendahnya dimensi grief dalam reverse culture shock. Berdasarkan penemuan penelitian, individu yang kembali ke Indonesia setelah menetap di luar negeri perlu dibantu untuk membangun rasa bermakna terhadap teman-temannya melalui koneksi dengan lingkungan sosial yang perhatian dan suportif.