# 1998 NAIA Division I women's basketball tournament

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.

## Bracket

| First round | First round | First round | Second round | Second round | Second round | Elite Eight | Elite Eight | Elite Eight | | Final Four | Final Four | Final Four | | National championship | National championship | National championship |
| 1 | Union (TN) | 78 | | | | | | | | | | | | | | |
| | Pikeville | 51 | | | | | | | | | | | | | | |
| | Pikeville | 51 | 1 | Union (TN) | 76 | | | | | | | | | | | |
| | | | 16 | Montana State Northern | 63 | | | | | | | | | | | |
| | SW Oklahoma State | 62 | 16 | Montana State Northern | 63 | | | | | | | | | | | |
| 16 | Montana State Northern | 65 | | | | | | | | | | | | | | |
| 16 | Montana State Northern | 65 | | | | 1 | Union (TN) | 99* | | | | | | | | |
| | | | | | | 8 | Oklahoma Baptist | 92 | | | | | | | | |
| 9 | Rockhurst | 75 | | | | | | | 8 | Oklahoma Baptist | 92 | | | | | | | | |
| | Vanguard | 61 | | | | | | | | | | | | | | |
| | Vanguard | 61 | 9 | Rockhurst | 51 | | | | | | | | | | | |
| | | | 8 | Oklahoma Baptist | 73 | | | | | | | | | | | |
| | Claflin | 53 | 8 | Oklahoma Baptist | 73 | | | | | | | | | | | |
| 8 | Oklahoma Baptist | 86 | | | | | | | | | | | | | | |
| 8 | Oklahoma Baptist | 86 | | | | | | | | 1 | Union (TN) | 80 | | | | |
| | | | | | | | | | | | Findlay | 64 | | | | |
| 5 | Phillips | 65 | | | | | | | | | | | | Findlay | 64 | | | | |
| | Incarnate Word | 55 | | | | | | | | | | | | | | |
| | Incarnate Word | 55 | 5 | Phillips | 61 | | | | | | | | | | | |
| | | | 12 | Lewis–Clark State | 88 | | | | | | | | | | | |
| | Indiana–South Bend | 63 | 12 | Lewis–Clark State | 88 | | | | | | | | | | | |
| 12 | Lewis–Clark State | 96 | | | | | | | | | | | | | | |
| 12 | Lewis–Clark State | 96 | | | | 12 | Lewis–Clark State | 70 | | | | | | | | |
| | | | | | | | Findlay | 84 | | | | | | | | |
| 13 | Western Washington | 69 | | | | | | | | Findlay | 84 | | | | | | | | |
| | Findlay | 76 | | | | | | | | | | | | | | |
| | Findlay | 76 | | Findlay | 82 | | | | | | | | | | | |
| | | | 4 | Xavier Louisiana | 63 | | | | | | | | | | | |
| | Georgia Southwestern | 66 | 4 | Xavier Louisiana | 63 | | | | | | | | | | | |
| 4 | Xavier Louisiana | 70 | | | | | | | | | | | | | | |
| 4 | Xavier Louisiana | 70 | | | | | | | | | | | | 1 | Union (TN) | 73 |
| | | | | | | | | | | | | | | 3 | Southern Nazarene | 70 |
| 3 | Southern Nazarene | 100 | | | | | | | | | | | | | | | 3 | Southern Nazarene | 70 |
| | St. Vincent | 71 | | | | | | | | | | | | | | |
| | St. Vincent | 71 | 3 | Southern Nazarene | 75 | | | | | | | | | | | |
| | | | 14 | SE Oklahoma State | 65 | | | | | | | | | | | |
| | NW Oklahoma State | 63 | 14 | SE Oklahoma State | 65 | | | | | | | | | | | |
| 14 | SE Oklahoma State | 68 | | | | | | | | | | | | | | |
| 14 | SE Oklahoma State | 68 | | | | 3 | Southern Nazarene | 72 | | | | | | | | |
| | | | | | | 6 | Campbellsville | 67 | | | | | | | | |
| 11 | Central State (OH) | 64 | | | | | | | 6 | Campbellsville | 67 | | | | | | | | |
| | Oklahoma City | 75 | | | | | | | | | | | | | | |
| | Oklahoma City | 75 | | Oklahoma City | 51 | | | | | | | | | | | |
| | | | 6 | Campbellsville | 69 | | | | | | | | | | | |
| | LeTourneau | 56 | 6 | Campbellsville | 69 | | | | | | | | | | | |
| 6 | Campbellsville | 95 | | | | | | | | | | | | | | |
| 6 | Campbellsville | 95 | | | | | | | | 3 | Southern Nazarene | 66 | | | | |
| | | | | | | | | | | 2 | Simon Fraser | 63 | | | | |
| 7 | Wayland Baptist | 89 | | | | | | | | | | | 2 | Simon Fraser | 63 | | | | |
| | Louisiana College | 72 | | | | | | | | | | | | | | |
| | Louisiana College | 72 | 7 | Wayland Baptist | 69* | | | | | | | | | | | |
| | | | 10 | Auburn Montgomery | 62 | | | | | | | | | | | |
| | Freed–Hardeman | 31 | 10 | Auburn Montgomery | 62 | | | | | | | | | | | |
| 10 | Auburn Montgomery | 63 | | | | | | | | | | | | | | |
| 10 | Auburn Montgomery | 63 | | | | 7 | Wayland Baptist | 64 | | | | | | | | |
| | | | | | | 2 | Simon Fraser | 80 | | | | | | | | |
| 15 | Lipscomb | 72 | | | | | | | 2 | Simon Fraser | 80 | | | | | | | | |
| | East Central (OK) | 78 | | | | | | | | | | | | | | |
| | East Central (OK) | 78 | | East Central (OK) | 58 | | | | | | | | | | | |
| | | | 2 | Simon Fraser | 67 | | | | | | | | | | | |
| | McKendree | 39 | 2 | Simon Fraser | 67 | | | | | | | | | | | |
| 2 | Simon Fraser | 78 | | | | | | | | | | | | | | |