T.N.B. College is the second oldest institution of higher learning in Bihar, second to Patna College of Patna only. This College is now 129(one hundred and twenty nine) years old having already celebrated its centenary in which the chief guest was the then Chief Minister of Bihar, Hon’ble Shri Bhagwat Jha ‘Azad? It was established on 12 Feb. 1883 with Intermediate level classes then called as F. A. under Calcutta University, as there was no university in Bihar. Rai Bahadur Tej Narayan Singh contributed a good deal of his mind, labour, money and land also for its building and the college was named as Tej Narayan Jubilee College (TNJ). Just after 2 years in 1885, degree and Post-graduate classes in some of the subject of Arts and degree class in Law were started in this college. Again the successors of Banaili families came to its help and contributed 60 acres of land and 6 lakhs of rupees in Cash for the construction of building and other developmental work. The Govt. of Bihar also gave some grant for the building and as a consequence the magnificent building of the college came up in 1922. The college was renamed on the 23rd June 1959 as Tej Narayan Banaili College considering the great contribution made by the Banaili estate towards its rise and glorious achievements.
In the year 1959 it was made a constituent unit of Bihar University and 12th July?960, Bhagalpur University was established after bifurcation from the Bihar University and TNB College became the first premier constituent College of the University. In fact most of the present P. G. departments of Bhagalpur University, originated first in the T.N.B.College and then after a few years, got transferred to their present buildings. In Feb.?004, the college was accredited by NAAC and awarded B+ grade.
A big library building, Physics department block, students' common Room, a big stadium for games & sports were constructed from the UGC fund and state Govt. funds. The library of the college has more than 86,000(Eighty Six thousand) books and journals. There are many societies and academic associations functioning, almost in all the department.
T.N.B. College has had a glorious past 129 (One hundred & twenty nine) years and a very high academic culture. Persons of great eminence have been students and teachers of this college. Some names may be proudly mentioned. The immortal novelist Sri Sarat Chandra Chattopadhyaya, National Professor of Physics, Sri S.K. Mitra, Messrs. K.P. Basu (great Algebra-man), L.K. Jha, Dr. S.C. Jha (Member, Economic Advisory Council to the Prime-Minister, Govt. of India), Sri A. K. Choudhary (I.A.S., Presently Chief Secretary, Govt. of Bihar) and many others whose names could not possible to be mentioned here are all glorified personalities connected with this institution.