1998 Big 12 Conference baseball tournament
The 1998 Big 12 Conference baseball tournament was the second played in Big 12 history, and the first to be held at AT&T Bricktown Ballpark in Oklahoma City, OK from May 14 through 17. Texas Tech won the tournament and earned the Big 12 Conference's automatic bid to the 1998 NCAA Division I baseball tournament. The format followed that used by the NCAA Division I Baseball Championship at the time: a six-team, double-elimination tournament.
Regular season standings
Source:| Place | Seed | Team | Conference | Conference | Conference | Conference | Conference | Overall | Overall | Overall | Overall |
| Place | Seed | Team | W | L | T | % | GB | W | L | T | % |
| 1 | 1 | 21 | 9 | 0 | – | 46 | 20 | 0 | |||
| 2 | 2 | 18 | 10 | 0 | 2 | 41 | 20 | 1 | |||
| 3 | 3 | 18 | 11 | 0 | 2.5 | 44 | 20 | 0 | |||
| 4 | 4 | 17 | 11 | 0 | 3 | 42 | 20 | 0 | |||
| 5 | 5 | 17 | 12 | 0 | 3.5 | 36 | 18 | 0 | |||
| 6 | 6 | 15 | 12 | 0 | 4.5 | 40 | 21 | 0 | |||
| 7 | – | 10 | 13 | 0 | 7.5 | 24 | 20 | 0 | |||
| 8 | – | 11 | 18 | 0 | 9.5 | 23 | 32 | 1 | |||
| 9 | – | 10 | 18 | 0 | 10 | 20 | 27 | 0 | |||
| 10 | – | 9 | 19 | 0 | 11 | 20 | 32 | 0 | |||
| 11 | – | 7 | 20 | 0 | 12.5 | 22 | 29 | 0 |
- Colorado did not sponsor a baseball team.
Tournament
- Iowa State, Kansas, Kansas State, Nebraska, and Texas did not make the tournament.