The 2005 NCAA Division I softball tournament was the twenty-fourth annual tournament to determine the national champion of NCAA women's collegiate softball. Held during May and June 2005, sixty-four Division I college softball teams contested the championship. The tournament featured eight regionals of eight teams, each in a double elimination format. The 2005 Women's College World Series was held in Oklahoma City, Oklahoma from June 2 through June 8 and marked the conclusion of the 2005 NCAA Division I softball season. Michigan won their first championship by defeating UCLA two games to one in the championship series. Michigan first baseman Samantha Findlay was named Women's College World Series Most Outstanding Player.
<onlyinclude></onlyinclude>
The following players were members of the All-Tournament Team.