正平（1347年十二月八日至1370年七月二十四日）是日本南朝的年号之一。这个时代的南朝天皇是后村上天皇与长庆天皇。

• 兴国七年十二月八日（1347年1月20日）改元正平
• 正平二十五年七月二十四日（1370年8月16日）改元建德

Shōhei(正平) was a Japanese era name (年号, nengō, lit. year name) of the Southern Court during the Era of Northern and Southern Courts after Kōkoku and before Kentoku. This period spanned the years from December 1346 to July 1370. The Southern Court emperors in Yoshino were Emperor Go-Murakami(后村上天皇,Go-Murakami-tennō) and Emperor Chōkei(长庆天皇,Chōkei-tennō). The emperors in Kyoto were Emperor Kōmyō(光明天皇,Kōmyō-tennō), Emperor Sukō(崇光天皇,Sukō-tennō) and Emperor Go-Kōgon(后光厳天皇,Go-Kōgon-tennō) in the north.