;Rabindranath Tagore A deep friendship grew between Rabindranth and Atulprasad.
Rabindranath Tagore initiated
Khamkheyali Sabha along with
Gaganendranath Tagore at Jorasako, and its meeting on 5 February 1897 was attended by Atul Prasad Sen and
Chittaranjan Das, among other dignitaries. In July 1897 Atul Prasad hosted the meeting of the
Khamkheyali Sabha in his house at Wellesley Mansion, Kolkata. Rabindranath Tagore's first visit to Lucknow was on invitation from Atul Prasad in 1914. Tagore was accompanied by Andrews (
Charles Freer Andrews, popularly known as
Deenabondhu Andrews) and Atul Prasad joined with them at Tagore's cottage at Ramgarh, which the Poet bought on 10 May 1914. In June 1914 Tagore came to Lucknow from Ramgarh, and enjoyed the hospitality of Atul Prasad, and returned to Calcutta on 14 June 1914. Atul Prasad mentioned this event in his memoirs and recapitulated: Tagore's journey to Japan and other countries of the far east was due on 3 May 1916. Many relatives, friends, well-wishers, organisations and followers arranged for farewell ceremonies. Atul Prasad arranged one such farewell gathering in his house in Calcutta on 27 April 1916. Kalidas Nag wrote: Tagore's second visit to Lucknow was during 5 to 10 March 1923, when he addressed the Convocation of Lucknow University. Tagore was basically travelling across India on a lecture tour to raise money for Visva-Varati. Atul Prasad arranged a musical
durbar in his honour and invited famous Indian classical singers of Lucknow at his residence. Tagore, while proceeding further to Bombay en route to Ahmedabad by train, composed a song, appreciating the event, তোমার শেষের গানের রেশ নিয়ে কানে চলে এসেছি ওগো কেউ কি তা জানে. ;Sukumar Ray First row sitting from left: Subinoy Ray,
Prasanta Chandra Mahalanobis,
Atul Prasad Sen, Shishir Kumar Datta,
Sukumar Ray Middle row from left: Jatindranath Mukhopadhyay, Amal Home,
Suniti Kumar Chattopadhyay, Jibanmoy Roy Standing from left: Hiran Sanyal, Ajitkumar Chakrabarty,
Kalidas Nag, Pravat Chandra Gangoadhyay, Dr. Dwijendranath Maitra, Satish Chandra Chattopadhyay, Shrish Chandra Sen, Girija Shankar Roy Choudhury
Sukumar Ray was a great friend of Atul Prasad. During his college life he initiated the Nonsense Club whose magazine was named as '৩২II ভাজা' (সাড়ে বত্রিশ ভাজা). He visited England during 1911-13 England on the Guruprasanna Ghosh Scholarship to study photography and printing technology, and at that time he became very close to Atul Prasad Sen and many others. After returning from England Sukumar formed Manday Club, a literary gathering of contemporary Bengali writers, which had such noted personalities as Satyendranath Dutta, Suniti Kumar Chaterjee, Atul Prasad Sen, Kalidas Nag, Prasanta Chandra Mahalanobis, Dr. Dwijendranath Maitra and Prabhat Kumar Mukhopadhyay as members. Sukumar married Suprabha Das, granddaughter of Kali Narayan Gupta on 13 December 1919, and a family relation thus was developed between them. ;Dilip Kumar Roy
Dilip Kumar Roy (22 January 1897 – 6 January 1980) was a Bengali Indian musician, musicologist, novelist, poet, essayist, and was an ardent follower of
Sri Aurobindo. He was the son of
Dwijendralal Ray. in 1922 while young Dilip Kumar was on a tour studying Indian classical music from various great masters, he came to Lucknow, and here in the house of Atul Prasad Sen he met Ronald Nixon, a professor at Lucknow University, who introduced Dilip to ideologies of Sri Aurobindo. Dilip Kumar became a close collaborator of Atul Prasad, and immensely contributed, along with pursuing in versatile field of activities, in popularising Atul Prasad's songs. (
Note on date of event: 1922) ;Pahari Sanyal
Pahari Sanyal, whose real name was
Nagendranath, came to Lucknow to join Marris College as a student of
Hindustani Classical Music. Young Nagendranath was immediately drawn very close to Atul Prasad because of his unbound passion to classical music and became a regular visitor to his house. He witnessed and took active part in many of Atul Prasad's notable creations. Later, he was known, apart from being an outstanding luminary in the world of Bengali cinema, as one of the best exponents of Atul Prasad's song. He recorded several songs of Atul Prasad later. (''Note on date of event: 1926-28. Marris College of Music, Lucknow, later known as
Bhatkhande Music Institute University was established by
Vishnu Narayan Bhatkhande in 1926. Pahari Sanyal's visit to Atul Prasad's house may be dated around 1926-28.'') ;Kumar Prasad Mukherjee Kumar Prasad Mukherjee quoted from his father Dhurjati Prasad Mukerji's memoir মনে এলো (
Mone Elo): ;Sachin Dev Burman Sachin Deb Burman mentioned in his memoirs: ;Satyajit Ray
Satyajit Ray had a lasting impression of Atul Prasad, his maternal uncle, on him. He remembered Atul Prasad "
indulging in a great display of Urdu manners". In his memoir, he wrote: ;Mira Choudhury Siddhartha Ghosh in his book ছবি তোলা: বাঙালির ফোটোগ্রাফি-চর্চা (Taking Pictures: The Practice of Photography by Bengalis) published an interview with Mira Choudhury, a noted photographer of early twentieth century. Meera was born in 1905 and all through her childhood she met her father's (Dwijendralal Maitra, a well-known doctor) famous friends: the composer Atulprasad Sen, Sukumar Ray, and many others who visited the family at their quarters at Mayo Hospital, where her father was employed. ;Bimal Mukherjee Bimal Mukherjee was only 23 years of age when he started touring the world in 1926 in his bi-cycle. He returned in 1937 and published his memoir দু'চাকায় দুনিয়া (
Duchakay Duniya), where he mentioned that in 1928 he met Atul Prasad in England: ==Death==