In 1983, Watanabe married his first wife, Yumiko. The couple had two children, a son, Dai Watanabe (born 1984), who is an actor, and a daughter
Anne Watanabe (born 1986) who is an actress and fashion model. In September 2005, following two years of arbitration, he and Yumiko were divorced. In August 2008, Dai had his first child, a son, making Ken a grandfather at the age of 48. A daughter was born to Dai in March 2010. In May 2016, Watanabe's daughter gave birth to twin girls. In November 2017 she gave birth to a son, giving Watanabe five grandchildren altogether. just after they had attended a
New York City premiere of his film
Sayuri together. '' in July 2010 Watanabe formally adopted Minami's son from her previous marriage to director
Jinsei Tsuji, and for a time the three of them lived in
Los Angeles. In order to increase the amount of time the family could spend together, considering Ken's work requiring him to travel so much, they later returned to Japan. Initially Minami and Ken did not hold a wedding ceremony, but in 2010 they announced that they had held a ceremony on August 1 in Los Angeles. On May 17, 2018, Minami's agency announced that she and Watanabe had divorced after he had admitted to having an extramarital affair. In June 2023, Watanabe married for the third time, reportedly to a woman who is 21 years his junior, after dating for over 9 years.
Philanthropy On March 13, 2011, he launched a YouTube page to raise awareness about the
2011 Tōhoku earthquake and tsunami and the subsequent
Fukushima nuclear disaster and invited celebrities to add their videos of the triple tragedy in Japan. In his video in English, he made a call to action to support the victims of triple disaster and to raise funds in the relief effort. In conjunction amidst the Fukushima crisis, he has also created his own website for the cause.
Health In 1989, Watanabe was diagnosed with
acute myeloid leukemia. The cancer returned in 1994, but he later recovered. In 2006, Watanabe revealed in his
autobiography Dare? - Who Am I? that prior to commencing work on
The Last Samurai, it was discovered that he had contracted
hepatitis C from a blood transfusion he received while undergoing treatment for his leukemia. In 2016, while on a break from performing in a Broadway production of
The King and I, Watanabe was diagnosed with
stomach cancer. Due to the early diagnosis, surgery was successfully able to remove the cancer. ==Acting credits ==