Following is the list of Unicode fonts given for your convenience but you may use any other Unicode font that you like. If the link is given, you may be able to download the font from that location. Please note that linking the font file does not imply endorsement of website and/or font and/or any legal stance to use the font for your purpose. You may download it at your own risk.
Language Unicode Font
Assamese
Bengali
Manipuri
Noto Sans Bengali (Google)
Lohit Bengali (Fedora)
Lohit Assamese (Fedora)
Nirmala UI (Microsoft)
Vrinda (Microsoft)
Shonar Bangla (Microsoft)
Arial Unicode MS (Microsoft)
Bodo
Dogri
Hindi
Kashmiri
Konkani
Maithili
Marathi
Nepali
Sanskrit
Sindhi
Noto Sans Devanagari (Google)
Lohit Devanagari (Fedora)
Lohit Marathi (Fedora)
Lohit Nepali (Fedora)
Marathi Cursive (Marathi Modi)
Nirmala UI (Microsoft)
Mangal (Microsoft)
Kokila (Microsoft)
Aparajita (Microsoft)
Arial Unicode MS (Microsoft)
Gujarati Noto Sans Gujarati (Google)
Lohit Gujarati (Fedora)
Nirmala UI (Microsoft)
Shruti (Microsoft)
Arial Unicode MS (Microsoft)
Kannada Noto Sans Kannada (Google)
Lohit Kannada (Fedora)
Nirmala UI (Microsoft)
Tunga (Microsoft)
Arial Unicode MS (Microsoft)
Malayalam Noto Sans Malayalam (Google)
Lohit Malayalam (Fedora)
Nirmala UI (Microsoft)
Kartika (Microsoft)
Arial Unicode MS (Microsoft)
Meitei Noto Sans Meetei Mayek (Google)
Odia/Oriya Noto Sans Oriya (Google)
Lohit Odia (Fedora)
Nirmala UI (Microsoft)
Kalinga (Microsoft)
Arial Unicode MS (Microsoft)
Punjabi Noto Sans Gurmukhi (Google)
Lohit Punjabi (Fedora)
Nirmala UI (Microsoft)
Raavi (Microsoft)
Agency FB (Microsoft)
Arial Unicode MS (Microsoft)
Santali (Ol Chiki) Noto Sans Ol Chiki (Google)
Ol-Chiki Bivash
Nirmala UI (Microsoft)
Sora Nirmala UI (Microsoft)
Tamil Noto Sans Tamil (Google)
Lohit Tamil (Fedora)
Nirmala UI (Microsoft)
Latha (Microsoft)
Vijaya (Microsoft)
Agency FB (Microsoft)
Arial Unicode MS (Microsoft)
Telugu Noto Sans Telugu (Google)
Lohit Telugu (Fedora)
Nirmala UI (Microsoft)
Vani (Microsoft)
Gautami (Microsoft)
Arial Unicode MS (Microsoft)