The Diocese of Suwon (Lat.

: Dioecesis Suvonensis) is a particular church of the Latin Church of the Catholic Church.

The seat of the Bishop of Suwon is at Jeongjadong Cathedral in Suwon, Gyeonggi-do, South Korea.

Pope Paul VI created the episcopal see on October 7, 1963.

The territory had previously been part of the Archdiocese of Seoul, to which Suwon is suffragan.