Microsoft Word是微软公司的一个收费文本处理应用进程，最初在1983年由Richard Brodie为了运行DOS的IBM计算机而编写的，随后的版本可运行于Apple Macintosh（1984年）、SCO UNIX和Microsoft Windows（****年），并成为了Microsoft Office的一部分。现时最新的版本是Word 2016 for Windows及Word 2016 for Mac。

Microsoft Word is a word processor developed by Microsoft. It was first released on October 25, 1983 under the name Multi-Tool Word for Xenix systems. Subsequent versions were later written for several other platforms including IBM PCs running DOS (1983), Apple Macintosh running Mac OS (1985), AT&T Unix PC (1985), Atari ST (1988), OS/2 (****), Microsoft Windows (****) and SCO Unix (1994). Commercial versions of Word are licensed as a standalone product or as a component of Microsoft Office, Windows RT or the discontinued Microsoft Works suite. Microsoft Word Viewer and Office Online are Freeware editions of Word with limited features.