325 recognized Indian languages
The following information is derived from DM Silveira's INDIA BOOK 1994-95, page 61, ISBN 81-900218-2-6 published by Classic Publishers Pvt. Ltd., Goa, India.

The original author of this was Mr. Gurnek Singh


Agaria, Ahirani, Aimol, Aiton, Anal, Andamanese, Angani, Angika, Ao, Apatani, Arabic, Armenian, Ashing, Assamese, Asuri, Awadhi, Badaga, Baghelkhandi, Bagri, Baigani, Bajania, Balti, Bangni, Banjari, Basturia, Bauria, Bawm, Bazigar Boli, Bengali, Bhanja- bhumia, Bantu, Bharmauri, Bhairi, Bhili, Bhojpuri, Bhotia, Bhuiya, Bhumij, Bhunjia, Biate, Bilaspuri, Birhor, Birjia, Bishnupriya, Bodo, Bokar, Bondo, bori, Braj Bhasha, Brijlal, Bugun, Bundelkhandi, Burmese, Bushari, Chakhesang, Chakma, Chambilai, Chameali, Chang, Changpa, Chattisgarhi, Chikari, Chinali, Chiru, Chote, Churasi, Dalu, Deori, Dhanki, Dhimal, Dhodia, Dhundhari, Didayi, Dimasa, Dingal, Dogri, Dommari, Droskhat/Dokpa, Duhlian-Twang, English, French, Gadaba, Gadiali, Gallong, Gameti, Gamit, Gangte, Garasia, Garhwali, Garo, Giarahi, Gondi, Gujarati, Gujjari, Gurung, Gutob, Hajong, Halam, Halbi, Harauti, Haryanavi, Hebrew, Himachali, Hindi, Hinduri, Hindusthani, Hmar, Ho, Hrusso, Hualngo, Irula, Jabalpuri, Jangali, Jarawa, Jaunsari, Juang, Kabui, Kachanga, Kachari, Kachchi, Kadar, Kagati, Kakbarak, Kanashi, Kangri, Kannada, Karbi, Karen, Karko, Kashmiri, Kathiawari, Khadiboli, Khaka, Khamba, Khampa, Khampti, Khampti-shan, Kharia, Khasi, Khaskura, Khatri, Kherwari, Khiangan, Khorusti, Khotta, Kinnauri, Kiradi, Kisan, Koch, Kodagu, Koi, Koireng, Kokni, Kolami, Kom, Komkar, Konda, Konicha, Konkani, Konyak, Koracha, Koraga, Korava, Korku, Korwa, Kota, Kotwalia, Kudmali, Kui, Kuki, Kulvi, Kumaoni, Kunbi, Kurukh, Kuvi, Ladakhi, Lahauli, Laihawlh, Lakher (Mara), Lalung,Lambani, Lamgang, Laotian, Laria, Lepcha, Limbu, Lisu, Lodha, Lotha, Lushai, Mag, Magahi, Magarkura, Mahal, Maithili, Majhi, Makrani, Malankudi, Malayalam, Malhar, Malto, Malvi, Manchat, Mandiali, Mangari, Mao, Maram, Marathi, Maria, Maring, Marwari, Mavchi, Meitei, Memba, Mewari, Mewati, Milang, Minyong, Miri, Mishing, Mishmi, Mizo, Monpa, Monsang, Moyon, Muduga, Multani, Mundari, Na, Nagari, Nagpuri, Naikadi, Naiki, Nati, Nepali, Nicobarese, Nimari, Nishi, Nocte, Odki, Onge, Oriya, Padam, Pahari, Paharia, Palilibo, Paite, Panchpargania, Pang, Pangi, Pangwali, Parimu, Parji, Paschima, Pasi, Pashto, Pawri, Pengo, Persian, Phom, Pochury, Punchi, Punjabi, Rai (Raikhura), Rajasthani, Ralte, Ramo, Rathi, Rengma, Riang, Sadri, Sajalong, Sambalpuri, Sangtam, Sansi, Santali, Sadra, Saraji, Sarhodi, Saurashtri, Sema, Sentinelese, Shekhawati, Sherdukpen, Sherpa, Shimong, Shina, Shompen, Sikligar, Sindhi, Singpo, Siraji, Sirmauri, Soliga, Sulung, Surajpuri, Tagin, Tai, Tamang, Tamil,Tangam, Tangkhul, Tangsa, Tataotrong, Telugu, Thado, Thar, Tharu, Tibetan, Toda, Toto, Tulu, Urdu, Vaiphei, Varli, Wagri, Wancho, Yereva, Yerukula, Yimchungre, Zakring (Meyer), Zeliang, Zemi, Zou.