← → 1998 in the Philippines details events of note that happened in the Philippines in the year 1998.

The year was also designated for the country's year-long 100th centennial anniversary of the Philippine Independence, as known by its theme, "100 Kalayaan: Kayamanan ng Bayan (1898-1998)".

292, chapter 7 section 26, the following are regular holidays and special days, approved on July 25, 1987.

[29] Note that in the list, holidays in bold are "regular holidays" and those in italics are "nationwide special days".

In addition, several other places observe local holidays, such as the foundation of their town.