According to Official Guinness Records,
The largest audience at a book reading (single author) consists of 6,786 people, achieved at event organised by Gadchiroli Police Department, Adarsh Mitra Mandal, Uday Jagtap and Maheswar Reddy (all India), in Maharashtra, India, on 3 March 2018.The reading was by Mr. Uday Jagtap who read from his book, “Gandhivichar aani Ahimsa” (Spirit of Peace and Harmony with thoughts of Mahatma Gandhi).
For a complete list of 2018 records, please visit 2018 Guinness Records in India.