1) Lectures At The University Of Illinois, Urbana-Champaign, Usa As Lsa Fellow, 1978;
2) Visiting Lecturer, Univ Of Chittagong, Bangladesh, 1980 With Additional Lectures At Khulna And Sylhet;
3) Lectures At The World Congress Of Linguistics With A Permanent International Committee Of Linguistics Fellowship, Humboldt University, Berlin (East, Gdr-East Germany, 1985;
4) Delivered Lectures As Visiting Professor, Indian Institute Of Advanced Study, Shimla, 1989;
5) Delivered Lectures At The Universities Of Venice, Naples And Rome As A Member Of Indian Delegation In Italy, 1999;
6) Special Lecture At The Asian Institute, Islamabad; January, 1999;
7) Plenary Lecture At The 7th Himalayan Languages Symposium, Uppsala; Sweden, 2001;
8) Visiting Faculty, University Of Uppsala For Sasnet-Sida Project On Himachal Pradesh Languages, Sweden; 2003;
9) Plenary Talk, Inaugural Seminar, Asia Research Institute, Singapore; 2003;
10) Lecture At The International Seminar On Central Peripheries, Peripheral Centers, University Of Saarbrucken, Germany; 2004;
11) Unesco Lecture, Bangkok, Thailand; 2005;
12) Delegation To Mahatma Gandhi Institute, Moka, Mauritius To Lecture And Sign Mou Between Ciiland Mgi, 2006;
13) Poet-Invitee, Frankfurt Book Fair, Frankfurt, Germany, 2006 With Readings In Lectures In Four Cities;
14) Leader Of Indian Delegation Of Writers, China (To Beijing, Xi’an And Shanghai); September 2007
15) Delegation To The National Institute Of Language Education And Training, (Nilet), Colombo, Srilanka To Sign Mou, 2007;
16) Prof. S.K.Chatterji Memorial Lectures; Indira Gandhi National Centre For The Arts (Ignca), Newdelhi; October 2008;
17) 5th Gargi Gupta Memorial Lecture At The French Embassy Information Centre &Bharatiyaanuvadparishad, Delhi, 12th Nov 12, 2009;
18) Plenary Lecture, 18th European Conference On South Asian Studies, University Of Lund, Sweden, 2005;
19) Inaugural Plenary, 14th World Pragmatics Congress, University Of Goteborg, Sweden, 2008;
20) Special Lecture At The United Nations On The Occasion Of International Year Of Languages,December 2008;
21) Academic Visit To Inaugurate Language Resource Centre At Mgi, Mauritius, 2008;
22) Lectures On Translation At The London Book Fair, 2009;
23) Delegation To Kathmandu For South Asian University Meeting, Nepal, 2009;
24) Tagore Memorial Lecture At Iit, Kharagpur In December 2009;
25) Prof. Shantibhai Desai Memorial Lecture At Kuvempu University, Shimoga, April 2011;
26) Invited Lectures, Institute Of Post-Colonial Studies, Melbourne, Australia, 2011
27) Special Lecture At The Joint Bangladesh-India Tagore 150 Celebrations, Dhaka, May 2011;
28) Inauguration Invited Lecture At The Smithsonian Institution, Washington May, 2011;
29) Iccr Lecture, Moscow, Russian State University, Moscow; 2011
30) Iccr Lecture, Chulalongkorn University, Bangkok, Thailand, 2011
31) Member Of Indian Delegation In Paris And Chicago For Establishment Of Vivekananda Chair And Inauguration Of Tagore’s Original Painting Exhibition In February 2012;
32) Keynote At The World Bengali Convention, Dhaka, Bangladesh On 19-21 February, 2012;
33) Inaugural Lecture At The European Hindi Conference At The University Of Valladolid, Spain Andalso In Casa De’la India, In March 2012;
34) Plenary Lecture In The International Forum For Us Studies Conference At Uiuc On 5-7 April, 2012;
35) Inaugural Lecture At The 18th Himalayan Languages Symposium, Bhu, Varanasi, 18-19th Oct2012;
36) Panel Lecture At ‘Samanvay’: Bharatiya Bhasha Mahotsava Organized By The India Habitat Centre,New Delhi (Nov 4-5, 2012);
37) Inaugural Lecture At ‘Melbandhan Festival’, Mumbai For Gujarati, Marathi, Hindi And Bengaliliterature (Nov 25,2012);
38) Panel Lecture At The Curtain Raiser Indo-Chinese Symposium On 100th Year Of The First Asiannobel Prize, Visva-Bharati-Jnu-Beijing University, 19th Dec 2012;
39) Silver Junilee Lecture For Calts, University Of Hyderabad, June 2013;
40) Plenary Lecture At The International Conference On Tagore And Mo Yan, Tongji University,Shanghai, June 2013
41) Keynote Address: ‘Language Of Power: Power Of Language’. International Seminar On Languageand Power: Perspectives, Issues And Impact; Special Center For Sanskrit Studies, J.N.U. Incollaboration With University Of Illinois, Urbana-Champaign, Usa And Central Institute Of Indianlanguages, Mysore; April 6-7, 2013.
42) Special Lecture On The Bangla New Year Eve: ‘Chithipatrer Semiotics O Rabindranath.’ Rabindrateertha, Kolkata; April 14 [With A Documentary On ‘Belles Lettres Of Tagore’ Produced Under Self],2013.
43) Invited Talk At Tongzi University, Shanghai, China: ‘Culture-Nature Dichotomy And Doublearticulation: Surviving The Information Age.’International Academic Conference On From Tagore To Mo Yan: The Universality Of One Hundred Years Of Oriental Culture; June 1-3, 2013.
44) Invitation At The Europalia Festival By The Govt Of Rumania, The Leuven Institute For Ireland In Europe, Belgium; Public Debate On Maitreyi Devi, Mircea Elliad And Tagore; Udaya Narayana Singh And Sorin Alexandrescu, Mediated By Patrick Pasture, 25th November 2013.
45) Masterclass Lecture At The European Commission, Brussels: ‘Tagore And Innovative Education’;, Belgium; 26th Nov 2013.
46) Talk On Tagore With Performance By Kaberichatterji At The Sanctuary Of Meritxell, Andorra: Tagore At Meritxell;; Nov 28, 2013.
47) Plenary Lecture At The National Seminar On 'Treasure Of Tranquility: Philosophical Legacy Of Indian Education', Vinaya Bhavana, Visva-Bharati ‘Education And What It Does To Us!’ On 3-4 February, 2014.
48) Invited Plenary Talk At The At Ramakrishna Mission Vidyamandira, Belur Math, Howrah, West Bengal; 'The Linguistic Landscape Of Bangla As Swamiji Was Engaged In Constructing,' National Seminar On ‘Swami Vivekananda’s Ideas And Our Times: A Retrospect On His 150th Birth Anniversary’, 21-22 Feb 2014.
49) Special Lecture At The Seminar On Suniti Kumar Chatterjee, Department Of Linguistics, University Of Calcutta: ‘Suniti Kumar In Search Of A Metaphor: On Policy, Perspectives And Pluralism’; March 6, 2014.
50) Valedictory Lecture At The Seminar On “Multilingualism And The Literary Culture Of India,” Centre For Comparative Literature, Uoh, & Sahitya Akademi, New Delhi At The School Of Humanities’ Auditorium, University Of Hyderabad; 27-29 March 2014.
51) Plenary Talk, University Of Strassbourg (France) : Inauguration Of The Chair Of Sanskrit & Indian Civilization, 3-5th November 2016.
52) Special Lecture At The Ccseas International Conference On Lu Xun And Tagore, Jnu & University Of Delhi: “Sanity And Insanity: The Concerns Of Tagore And Lu Xun”; Oct 2016.
53) Extra-Mural Lecture At Amity University, Gurgaon: ‘Tagore, Nature And Culture, Discovering The Roots Of Gitanjali’; September 19, 2016.
54) Plenary Talk At The First World Congress On Translation, Cmt & University Of Paris At Nanterre; May 2017.
55) Organized And Attended Several Meetings Under Kailash Satyarthi Centre For Child Rights & Development, Auh With Kscf.
56) Meeting As A Member (External) Of Faculty Of Arts, Aligarh Muslim University.
57) Chief Guest, Consultative Meet On Language Education; Ciil (Ministry Of Education), Mysore; July 17, 2021.
58) Tamil Mozhiyiyal Sangam, Coimbatore E-Learning: “Designing Our Linguistic Landscape: First Lessons In Language Planning”; June 20, 2020.
59) Madhubani Literature Festival Keynote; Dec 29, 2020.
60) Webinar – Ruminations: Lecture By Udaya Narayana Singh: Towards A Social History Of Linguistics In India: Nostalgia For The Future; Sept 27, 2020.
61) Inaugural Lecture: ‘Emerging Technologies And Changing Dynamics Of Information’ University Of Hyderabad 7-9 Sept, 2021.
62) Ficci Session On Digital India - It’s Triumph And Way Forward With Emerging Technologies, 7 July 2021.
63) Invited Talk On ‘On Creating A Cultural Universe In Santiniketan: Tagore & Utopia’; Celebrations Of Tagore In Hungary: Role Of Hungarians In Vishwabharti& India- Hungary Relations'. Amrita Sher-Gil Cultural Centre, Embassy Of India, Budapest On Voxomos Platform; May 5, 2021.
64) Inaugural Talk: ‘Lessons From The Language Policy Initiatives In India’, Series On Language Policy And Practices In The Global North And South: Challenges, Opportunities And Future Directions, University Of Leiden, April 9, 2021.
65) Challenges For The Marginalized: Opportunities Within The Heterogenous Landscape Of India.’ Iiep-Unesco Event, Organized By Dan Wagner Et Al.
66) Nov 2-4, 2021. ‘Desired Code Vs. Desirable Code: Language Learning In A Multi-Cultural Context.’ 2021 Pal Network Conference (Nairobi, Kenya): Building Better: Ensuring Learning Continuity For All