1957 NAIA World Series
{{Use mdy dates|date=August 2023}}
{{Infobox NCAA Baseball Conference Tournament |
| Year=1957
| Conference=NAIA
| ShortConference=NAIA
| Image=National Association of Intercollegiate Athletics logo.svg
| ImageSize=200
| Caption=1957 NAIA World Series
| Teams=8
| Format=Single elimination,
with consolation bracket
| Ballpark=Kokernot Field
| City={{flagicon|Texas}} Alpine, Texas
| Champions=Sul Ross State
| TitleCount=1st
| Coach=
| CoachCount=
| MVP=Frank Willis
| MVPTeam=Rollins
| Attendance=
| FirstTournamentEver= Yes
| Different Next=1958
}}
The 1957 NAIA World Series was the inaugural edition of the annual tournament hosted by the National Association of Intercollegiate Athletics to determine the national champion of baseball among its member colleges and universities in the United States and Canada.{{cite web |title=Championship History |url=https://www.naia.org/sports/bsb/Records/BSB_Championship.pdf |website=NAIA.org |publisher=National Association of Intercollegiate Athletics |access-date=22 June 2022}}
The tournament was played at Kokernot Field in Alpine, Texas, near the campus of Sul Ross State College.
Sul Ross State defeated Rollins in the championship game, 8–7, to win the inaugural NAIA World Series. Rollins player Frank Willis, however, was named tournament MVP.
The tournament featured eight teams in a single-elimination style tournament, with all first-round losers shifted into a secondary consolation bracket.
{{clear right}}
Bracket
{{8TeamBracket-Consols
| seeds = no
| RD3 = First round
| RD1-team1 = Lincoln Memorial
| RD1-score1 = 5
| RD1-team2 = Southwestern State
| RD1-score2 = 9
| RD2-team1 = William Jewell
| RD2-score1 = 8
| RD2-team2 = Lincoln Memorial
| RD2-score2 = 11
| RD2-team3 = Southwestern State
| RD2-score3 = 3
| RD2-team4 = Ozarks
| RD2-score4 = 0
| RD3-team1 = {{CBSB link|year=1957|team=Sul Ross State Lobos|title=Sul Ross State}}
| RD3-score1 = 9
| RD3-team2 = {{CBSB link|year=1957|team=William Jewell Cardinals|title=William Jewell}}
| RD3-score2 = 2
| RD3-team3 = {{CBSB link|year=1957|team=Buena Vista Beavers|title=Buena Vista}}
| RD3-score3 = 9
| RD3-team4 = {{CBSB link|year=1957|team=Lincoln Memorial Railsplitters|title=Lincoln Memorial}}
| RD3-score4 = 8
| RD3-team5 = {{CBSB link|year=1957|team=Western Illinois Leathernecks|title=Western Illinois State}}
| RD3-score5 = 13
| RD3-team6 = {{CBSB link|year=1957|team=Southwestern Oklahoma State Bulldogs|title=Southwestern State (OK)}}
| RD3-score6 = 12
| RD3-team7 = {{CBSB link|year=1957|team=Rollins Tars|title=Rollins}}
| RD3-score7 = 9
| RD3-team8 = {{CBSB link|year=1957|team=Ozarks Bobcats|title=Ozarks}}
| RD3-score8 = 7
| RD4-seed1=
| RD4-team1=Sul Ross State
| RD4-score1=8
| RD4-seed2=
| RD4-team2=Buena Vista
| RD4-score2=6
| RD4-seed3=
| RD4-team3=Western Illinois State
| RD4-score3=4
| RD4-seed4=
| RD4-team4=Rollins
| RD4-score4=7
| RD5-seed1=
| RD5-team1=Sul Ross State
| RD5-score1=8
| RD5-seed2=
| RD5-team2=Rollins
| RD5-score2=7
| RD5-team3=Buena Vista
| RD5-score3=6
| RD5-team4=Western Illinois State
| RD5-score4=14
}}