HWP (Hangul Word Processor) files are documents created through the Korean word processing program Hancom Office, the Korean equivalent of MS Office. The program is the most popular word processor in South Korea, especially with government-related institutions, as it was made to be used with Hangul (the Korean alphabet). This means that most official forms and documents that we need to download and fill out as foreigners in Korea will almost certainly come in an HWP format. Many Korean companies use this file format, as well.