Ryakuō

was a Japanese era of the Northern Court during the Era of Northern and Southern Courts, after Kenmu and before Kōei, lasting from August 1338 to April 1342. The emperor in Kyoto was . Go-Kōgon's Southern Court rival in Yoshino during this time-frame was .

==Nanboku-chō overview== thumb|140px|The Imperial seats during the Nanboku-chō period were in relatively close proximity, but geographically distinct. They were conventionally identified as: During the Meiji period, an Imperial decree dated March 3, 1911 established that the legitimate reigning monarchs of this period were the direct descendants of Emperor Go-Daigo through Emperor Go-Murakami, whose had been established in exile in Yoshino, near Nara.