指無量義經、妙法蓮華經、觀普賢菩薩行法經等三經。即：(一)無量義經，全一卷，蕭齊曇摩伽陀耶舍譯。此經旨在說實相之法。慧基、智顗等皆以此經為法華經所指之無量義教菩薩法。吉藏之法華義疏卷二，依處同、眾數大同、時節同、義同及翻經者言等五義，亦謂此經即法華所指之經。古來即以此經為法華經之開經。(二)妙法蓮華經，七卷，後秦鳩摩羅什譯。為流布最廣之經，智顗依之創立天台宗。(三)觀普賢菩薩行法經，一卷，劉宋曇摩密多譯。略稱觀普賢經。本經係承法華經最後之普賢菩薩勸發品而說觀普賢菩薩之方法及功德，被稱為法華經之結經。

法華三部經 The 'three parts of the Lotus Sutra;' The three principal sutras of the Tiantai 天台 and Nichiren 日蓮 sects. They are the Wuliangyi jing 無量義經 (T 276), which serves as an introduction to the Lotus Sutra, the Lotus Sutra (Fahua jing) 法華經 itself (T 262), which is the main discourse of the teaching; and the Puxianguan jing 普賢觀經 (T 277), which serves as the conclusion to the teaching.