LWP is a file format used by a word processor similar to Microsoft Word included in discontinued office package Lotus SmartSuite. SmartSuite was available for Windows systems up to Windows XP.

LWP format was very popular in the 1990s. IBM acquired Lotus SmartSuite from its developer Lotus Software, a fact which was a subject of dispute with Microsoft, the developer of Office package. Ultimately, the more popular word processor Word pushed Lotus Word Pro out of the market effectively ending the product’s life.