The Department of Mathematics is functional Since the Existence of Govt. College in D.G. Khan in 1945. The Present Department of Mathematics was established in 1989 after the up gradation of the college from Degree College to Postgraduate College and the classes of M.Sc Mathematics Started in this year 1989. In 2010, Higher Education Department started B.S. 4 year Program in 26 Colleges of the Punjab and Govt. P.G. College D.G. Khan was among one of them. Now the classes of M.Sc (P-I&II) and B.S.4 year Programs are running successfully in the Department.