《天下第一剑》是由潘垒执导，鲁平,祝菁,高鸣,韩江,卢苇,赵强,罗棋,李冠章,蒋青峰,金利生,川原,凌霄,罗汉,闵敏,太郎主演的剧情片。该电影于1968年在中国香港,中国台湾上映。本片導演兼編劇潘壘，原為台北詩集主編，可謂文學導演，連他執導的電影，無論是文藝或武俠片，亦彷彿有一份詩意，這正是其個人風格。本武俠片的故事描述，南劍丁夢豪（魯平）號稱「天下第一劍」，江湖劍士多傷其劍下，但一日，丁竟敗於路過的怪道人煙桿下；為履行諾言，乃屈從怪道人苦修三年。期間，丁不勝其苦，雕山門前巨石，竟學成石工，實為怪道人磨其銳氣，而暗中教化也。三年期滿，怪道人臨別贈言，謂其如欲「生」，則必先「死」……
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