延元（1336年二月二十九日至1340年四月二十八日）是日本南朝的年号之一。这个时代的南朝天皇是后醍醐天皇与后村上天皇。

• 建武三年二月二十九日（1336年4月11日）改元延元
• 延元五年四月二十八日（1340年5月25日）改元兴国

Engen (延元) was a Japanese era of the Southern Court during the Era of Northern and Southern Courts after Kemmu and before Kōkoku, lasting from February 1336 to April 1340. Reigning Emperors were Emperor Go-Daigo and Emperor Go-Murakami in the south and Emperor Kōmyō in the north.