Suryadeo Law College or S.D. Law College is a Law school situated beside Lal Kothi Road, Karpoor Nagar, Katihar in the Indian state of Bihar. It offers 5 years integrated LL.B. course which is approved by Bar Council of India (BCI), New Delhi and affiliated to Purnea University.
Suryadeo Law College was established in 1982. it was affiliated to B.N. Mandal University Madhepura. Presently it is under the affiliation of Purnea University from 2018.