Prince Shōtoku (聖徳太子 574-622) was a regent and a politician of the Imperial Court in Japan.

Shōtoku was born as the son of Emperor Yōmei. His mother was the daughter of Emperor Kimmei, Anahobe no Hashihito no Himemiko (穴穂部間人皇女). When the first reigning empress, Empress Suiko, took the throne, he was named as her regent and assisted the empress. During her reign, he succeded in establishing a centralized government. In 603, he established twelve steps of official ranks and completed a 17-clause constitution. In 607, he sent a mission led by Ono no Imoko to the Sui Dynasty.

He was a proponent of Buddhism, and built Hōryū-ji temple.

He is known by several titles and the real name is Umayado no ōji(厩戸皇子) (lit. the prince of the stable door) since he was born in front of a stable. He is also known as Toyosatomimi(豊聡耳) or Kamitsumiyaō(上宮王). In Kojiki, his name appears as Kamitsumiya no Umayado no Toyosatomimi no Mikoto (上宮之厩戸豊聡耳命). In the Nihonshoki, as well as Umayado no ōji, he is referred as 豊耳聡聖徳, 豊聡耳法大王, and 法主王. The most popular name Prince Shōtoku first appeared in Kaifuso written in 751, more than a hundred years after his death.

He appeared on Japan's first 10,000 yen note, issued December 1, 1958.

de:Shotoku Taishi ja:聖徳太子 zh-cn:圣德太子