ABSTRAK Pesatnya perkembangan perbankan syariah di Indonesia menimbulkan tantangan baru bagi bank syariah untuk lebih mendiversifikasi kegiatannya. Penelitian ini bermaksud untuk menganalisis dampak diversifikasi dan karakteristik bank pada profitabilitas bank umum syariah di Indonesia tahun 2015-2019 secara parsial maupun simultan. Diversifikasi diproksikan dengan diversifikasi pembiayaan berdasarkan akad dan diversifikasi pendapatan yang diukur menggunakan 1 - HHI (Herfindahl-Hirschman Index), sedangkan karakteristik bank diproksikan dengan non-performing  financing dan ukuran bank. Menggunakan pendekatan kuantitatif dengan metode regresi data panel. Hasil menunjukkan secara parsial diversifikasi pembiayaan dan risiko pembiayaan berdampak signifikan negatif, ukuran bank berdampak positif signifikan, sedangkan diversifikasi pendapatan tidak berdampak signifikan terhadap profitabilitas BUS di Indonesia. Secara simultan diversifikasi dan karakteristik bank berpengaruh signifikan terhadap profitabilitas BUS di Indonesia. Kata Kunci: Profitabilitas, diversifikasi pembiayaan, diversifikasi pendapatan, risiko pembiayaan, ukuran bank. ABSTRACT The rapid development of Islamic banking in Indonesia creates a new challenge for sharia banks to diversify. This study aims to investigate the impact of diversification and bank characteristics on the profitability of sharia commercial banks in Indonesia in 2015-2019 partially and simultaneously. In this study, diversification was proxied by financing diversification based on contracts and revenue diversification measured using 1 - HHI (Herfindahl-Hirschman Index), while bank characteristics were proxied by non-performing financing and bank size. Using a quantitative approach with panel data regression analysis. This study uses purposive sampling. 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