As you want to get the list of some of the best M.Sc Mathematics colleges in India so here it is for you:

Bhaktavatsalam Memorial College for Women, Chennai - Master Of Science in Mathematics
Sri Krishnadevaraya University - Master Of Science in Mathematics
Janta College - Master of Science in Mathematics
Sree Narayana College, Kollam - Master of Science in Mathematics
Srinivasa Ramanujan Centre - Master of Science in Mathematics
Government Arts College, Coimbatore - Master of Science in Mathematics
Kalyan Post Graduate College, Bhilai Nagar - Master Of Science in Mathematics
Government College, Kasaragod - Master of Science in Mathematics
KGRL College, Bhimavaram - Master of Science in Mathematics
Government Dungar College , Bikaner - Master Of Science in Mathematics
Bharathiar University, Coimbatore - Master Of Science in Mathematics
Gauhati University - Master of Science in Physics
Bethune College - Master of Science in Mathematics
Chaudhary Charan Singh University, Meerut - Master of Science in Mathematics
Vivekananda College - Masters of Science in Mathematics
NGM College, Coimbatore - Master of Science in Mathematics
Deccan Education Society's Willingdon College, Sangli - Master Of Science in Mathematics
St. Francis College for Women - Master of Science in Mathematics
Directorate of Distance Education, Guru Jambheshwar University - Master of Science Mathematics
Ramkrishna Paramhansa Mahavidyalaya of Arts, Commerce & Science, Osmanabad - Master of Science in Mathematics
Akkineni Nageswara Rao College - Master of Science in Mathematics
St. Thomas College (STCP) - Master of Science in Mathematics
Sanathana Dharma College - Master Of Science in Mathematics
Sree Vidyadhi Raja N S S College - Master of Science in Mathematics
Avanthi Degree and PG Colleges - Master of Science in Mathematics
Ramjas College, New Delhi - Masters of Science in Mathematics
Sree Narayana College, Punalur - Master of Science in Mathematics
Farook College - Master of Science in Mathematics
Kavitha Memorial Degree and PG College - Master of Science in Mathematics
B.V.M Holy Cross College - Master of Science in Mathematics
Devaswom Board College - Master of Science in Mathematics
Government Victoria College, Palakkad - Master Of Science in Mathematics
St. Stephen's College - Master of Science in Mathematics
St.Thomas College, Kozhencherry - Master of Science in Mathematics
St. Joseph's College - Master Of Science in Mathematics
B.C.M College - Master of Science in Mathematics
St. Joseph's College - Master of Science in Mathematics
Anugrah Narayan College - Master of Science in Mathematics
D.L.S P.G. College, Bilaspur - Master of Science in Mathematics
MVP Samaj’s K.T.H.M College - Master of Science in Mathematics
St. Thomas College (STC) - Master of Science in Mathematics
Zakir Hussain Delhi College - Master of Science in Mathematics
Milad E Sherief Memorial College, Kayamkulam - Master of Science in Mathematics
MES College of Arts, Science and Commerce, Bangalore - Master of Science in Mathematics
Holy Cross College, Tiruchirappalli - Master Of Science in Mathematics
P.S.C & K.V.S.C Government College - Master Of Science in Mathematics
Mannam Memorial Nss College,Kottiyam - Master Of Science in Mathematics
Deshbandhu College - Master of Science in Mathematics
Bishop Chulaparambil Memorial Womens College - Master of Science in Mathematics
Institute for Excellence in Higher Education (IEHE) - Master of Science in Mathematics
Pocker Sahib Memorial Orphanage College - Master of Science in Mathematics
Union Christian College - Master of Science in Mathematics
Mercy College - Master Of Science in Mathematics
Mahatma Gandhi College, Trivandrum - Master Of Science in Mathematics
K.L.E.S S. Nijalingappa College - Master of Science in Mathematics
Government P. G. College, Tonk - Master of Science in Mathematics
Kakani Venkata Ratnam College - Master Of Science in Mathematics
University of Hyderabad - Master of Science in Mathematics
Rajendra College, Chapra - Master of Science in Mathematics
Directorate of Distance Education, Madurai Kamaraj University - Master of Science in Mathematics
Ettumanoorappan College - Master of Science in Mathematics
Govt. DB Girls' PG (Autonomous) College - Master of Science - Mathematics
Tellakula Jalayya Polisetty Somasundaram College - Master of Scinece in Mathematics
Pavanatma College - Master of Science in Mathematics
St. John's College - Master Of Science in Mathematics
A.V.C. College, Mannampandal - Master of Science in Mathematics
Vysya College - Master of Science in Mathematics
Saradha Gangadharan College, Puducherry - Master of Science in Mathematics
University of Kashmir - Master of Science in Mathematics
JKC College - Master Of Science in Maths
University of Kerala, Thiruvananthapuram - Master Of Science in Mathematics
M.E.S College, Nedumkandam - Master of Science in mathematics
Govt. Model Science College (Autonomous) - Master of Science in Mathematics
Catholicate College - Master of Science in Mathematics
Fatima Mata National College Kollam - Master Of Science in Mathematics
Shibli National College - Master of Science in Mathematics
Directorate of Distance Education, Tripura University - Master of Science in Mathematics
M.J.College, Bhilai - Master Of Science in Mathematics
Aquinas College - Master of Science in Mathematics
D.A.V. (P.G) College - Master of Science in Mathematics
Shrimant Madhavrao Scindia Govt. Model Science College - Master of Science in Mathematics
Directorate of Distance Education, Kuvempu University - Master of Science in Mathematics
Guru Nanak Khalsa College - Master Of Science in Mathematics
Directorate of Distance Education, Sri Venkateswara University - Master of Science In Mathematics
School of Basic Science - Master of Science in Mathematics
CMS College, Kottayam - Master of Science in Mathematics
Newman College - Master of Science in Mathematics
Shyamlal Saraswati Mahavidyalaya, Shikarpur - Master of Science in Maths
Agurchand Manmull Jain College - Master of Science in Mathematics
Lady Brabourne College, Kolkata - Master of Science in Mathematics
T.K.M College of Arts and Science, Kollam - Master of Science in Mathematics