Lee Jae-jin () is a Korean name consisting of the family name Lee and the given name Jae-jin, and may also refer to:
Lee Jae-jin (badminton) (born 1983), South Korean badminton player Lee Jaijin (musician, born 1979), South Korean musician and member of Sechs Kies Lee Jae-jin (musician, born 1991), South Korean musician and member of F.T. Island