The 1998 NAIA Division I women's basketball tournament was the tournament held by the NAIA to determine the national champion of women's college basketball among its Division I members in the United States and Canada for the 1997–98 basketball season.
In a rematch of the 1997 final, Union (TN) defeated four-time defending champions Southern Nazarene in the championship game, 73–70, to claim the Bulldogs' first NAIA national title.
The tournament was played at the Oman Arena in Jackson, Tennessee.
Qualification
The tournament field remained fixed at thirty-two teams, with the top sixteen teams receiving seeds.
The tournament continued to utilize a simple single-elimination format.