Katsuya Takasu is a plastic surgeon based in Tokyo. He has attracted controversies regarding his stances of Holocaust denial and Nanjing Massacre denial.

Takasu is a member of Japan Medical Association, Japan Society of Aesthetic Surgery, Japanese Association of Cosmetic Surgeons, Japan Society of Plastic and Reconstructive Surgery, and is a former member of the American Academy of Cosmetic Surgery. In January 2011, Takasu was also appointed to be a visiting professor of cosmetic surgery at Showa University School of Medicine.