|Champions||Southern California(2nd title)|
|Runner-up||Missouri (2nd CWS Appearance)|
|Winning coach||Rod Dedeaux(2nd title)|
The 1958 NCAA University Division Baseball Tournament was played at the end of the 1958 NCAA University Division baseball season to determine the national champion of college baseball. The tournament concluded with eight teams competing in the College World Series, a double-elimination tournament in its twelfth year. Eight regional districts sent representatives to the College World Series with preliminary rounds within each district serving to determine each representative. These events would later become known as regionals. Each district had its own format for selecting teams, resulting in 26 teams participating in the tournament at the conclusion of their regular season, and in some cases, after a conference tournament. The College World Series was held in Omaha, NE from June 13 to June 19. The twelfth tournament's champion was Southern California, coached by Rod Dedeaux. The Most Outstanding Player was Bill Thom of Southern California.
* - Indicates game required 10 innings.
+ - Indicates game required 10 innings.
|Arizona vs Texas|
Brigham Young University withdrew from district. Colorado State was selected as District 7 representative in the College World Series.
|Portland vs Southern California|
|School||Conference||Record (Conference)||Head Coach||CWS Appearances||CWS Best Finish||CWS Record|
|Clemson||ACC||21-6 (12-3, 0 GB)||Bill Wilhelm||0
|Colorado State[a][b]||-||20-8||Pete Butler||4
|Holy Cross||-||16-4||Jack Barry||1
|Missouri||Big 8||17-5 (12-3, 0 GB)||Hi Simmons||2
|USC||CIBA||24-2 (14-2, 0 GB)||Rod Dedeaux||4
|Western Michigan||MAC||21-6-1 (10-0, 0 GB)||Charlie Maher||2
|First Round||Second Round||Third Round|
|Western Michigan||1||Southern California||812|
|June 13||Game 1||Missouri||3-1||Western Michigan|
|June 14||Game 2||Colorado State||10-5||Lafayette|
|Game 3||Holy Cross||3-0||Southern California|
|June 15||Game 5||Western Michigan||4-3 (10 innings)||Lafayette||Lafayette eliminated|
|Game 6||USC||4-0||Arizona||Arizona eliminated|
|Game 7||Missouri||11-2||Colorado State|
|Game 8||Holy Cross||17-4||Clemson|
|June 16||Game 9||Western Michigan||5-3||Clemson||Clemson eliminated|
|Game 10||Southern California||12-1||Colorado State||Colorado State eliminated|
|Game 11||Missouri||4-1||Holy Cross|
|June 17||Game 12||Southern California||6-2||Holy Cross||Holy Cross eliminated|
|Game 13||Missouri||3-1||Western Michigan||Western Michigan eliminated|
|June 18||Game 14||Southern California||7-0||Missouri|
|June 19||Final||Southern California||8-7 (12 innings)||Missouri||Southern California wins CWS|
The following players were members of the All-Tournament Team.
|Pitcher||Doug Gulick||Junior or Senior||Missouri|
|First baseman||Sonny Siebert||Missouri|
|Second baseman||Mike Castanon||Junior||USC|
|Third baseman||Ken Komodzinski||Sophomore||Holy Cross|
|Marvin Winegar||Senior||Western Michigan|