谷登堡计划（Project Gutenberg，缩写：PG），由志愿者参与，致力于将文化作品数字化和归档，并鼓励创作和发行电子书。该工程于1971年开始进行，是最早的数字图书馆。项目中大部分书籍都是公有领域书籍的原本，谷登堡计划确保这些原本自由流通、自由文件格式，有利于长期保存，并可在各种计算机上阅读。截至2018年7月，谷登堡计划声称馆藏已超过57,000件。
在可能的情况下，发布的格式是纯文本文件，但也包括其他格式，如HTML、PDF、EPUB、MOBI、Plucker。大多数版本使用的语言是英语，也有许多非英语的作品，包括汉语。目前有多个相关项目，提供更多的内容，包括区域性的和特定语言的作品。谷登堡计划也致力维系Distributed Proofreaders一个校对扫描文本的以互联网为基础的社区。
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