3. Yoko Kamikawa
Yoko Kamikawa currently serves as the minister of Justice and social affairs since 2007.
She is politically affiliated with the LDP and first elected in 2000 and becomes the member of the Japanese house of representative. She is graduated from the Tokyo University and completed her master degree in the public administration from the Harvard University.
She is the former think tank researcher of Japan and has well versed commanded control on the diplomatic affairs. Yoko Kamikawa estimated net worth is 42 million dollars and she is the third richest politician of Japan.