Mahasiswa tingkat akhir yang sedang mengerjakan tugas akhir sebagai syarat kelulusan, banyak mengalami tekanan yang mengakibatkan munculnya stres dan depresi. Timbulnya stres dan depresi dalam diri mahasiswa dapat mengakibatkan rendahnya subjective well-being sehingga dapat memengaruhi performa pengerjaan tugas akhir. Spiritualitas dianggap dapat memengaruhi tingkat subjective well-being mahasiswa, karena dengan spiritualitas individu dapat merasakan kehadiran Tuhan dan mendapatkan social support saat dalam masa sulit. Oleh karena itu, penelitian dilakukan dengan tujuan untuk mengetahui pengaruh spiritualitas terhadap subjective well-being mahasiswa di Universitas X. Penelitian dilakukan menggunakan metode kuantitatif, dan menggunakan teknik purposive sampling yang dilakukan pada 150 mahasiswa tingkat akhir. Alat ukur yang digunakan dalam penelitian ini adalah SHALOM (α=.91), SPANE (α=.87, α=.78) dan SWLS (α=.82). Hasil penelitian menunjukkan adanya pengaruh yang signifikan sebanyak 4.7% antara spiritualitas terhadap subjective well-being (R2 = .04, p < .05). Artinya semakin tinggi spiritualitas mahasiswa maka semakin tinggi pula tingkat subjective well-being mahasiswa tersebut. / Senior year students who are working on their thesis as one of the requirements to graduate, mostly experience pressure which cause stress and depression. The arise of stress and depression in senior year students can cause a low subjective well-being thus it may affect the performance of the thesis. It is considered that spirituality can affect level of subjective well-being of students because with individual spirituality, they are able to feel the presence of God and to obtain social support during the difficult times. Hence, this research is conducted with aims to know the effect of spirituality toward subjective well-being of students of University X. This research uses quantitative method with purposive sampling technique which conducted to 150 senior year students. The measuring instrument used in this research is SHALOM (α=.91), SPANE (α=.87, α=.78) and SWLS (α=.82). The result of this research shows a significant effect for 4.7% between spirituality toward subjective well-being (R2 = .04, p < .05), meaning that the higher the spirituality level of the students, the higher the subjective well-being level of that students.