Joji Obara (織原 城二 Obara Jōji?, born 1952) is a Korean man who has been convicted of committing multiple rapes in Japan. Most notoriously, he was tried for raping and murdering Australian national Carita Ridgway in 1992 and British national Lucie Blackman in 2000.
Joji Obara was born Kim Sung Jong (Hangul: 김성종; hanja: 金聖鐘) in 1952 to poor Zainichi Korean parents in Osaka, Japan. During his youth, his father worked his way from scrap collector to taxi driver to immensely wealthy owner of a string of pachinko parlours. Obara was educated at prestigious private schools as well as having daily tutoring in a variety of subjects such as languages and musical instruments. At age 15, he enrolled in a prestigious prep school affiliated with Keio University. At graduation, students are virtually guaranteed entrance to highly selective Keio University. Two years later, upon his father's death, he inherited property in Osaka and Tokyo. After graduating from Keio University with degrees in politics and law, he became a naturalized Japanese citizen and legally changed his name to Joji Obara.
During the late 1980s and early 1990s, Obara invested heavily in real estate speculation and became extremely wealthy, having assets estimated at as much as 38 million dollars. After losing his fortune when the bubble burst and his firm collapsed, he reportedly used his business as a money laundering front for the yakuza syndicate, Sumiyoshi-kai.