Princess Shōshi or Princess Masako (奨子内親王, Shōshi (Masako) Naishinnō, 28 September 1286 – 2 November 1348) was a Japanese Empress. She served as Saiō for her brother Emperor Go-Nijō in 1306–1308.
|Tenure||18 April – 16 November 1319|
|Born||28 September 1286|
|Died||2 November 1348 (aged 62)|
|Mother||Itsutsuji (Fujiwara) Chushi|
She was the daughter of Emperor Go-Uda and court lady Itsutsuji (Fujiwara) Chushi. She was named honorary Empress to her half brother Emperor Go-Daigo in 1319.
In the same year, she ordained as a Buddhist nun and was given the Dharma name Shinrikaku (真理覚).