The 1958 Colorado State College Bears baseball team represented Colorado State College in the 1958 NCAA University Division baseball season. The Bears played their home games at Jackson Field. The team was coached by Pete Butler in his 16th year at Colorado State.
The Bears lost the District VII playoff, but when BYU opted not to play in the College World Series due to their school's rule to rest on Sundays, the Bears to advanced to the College World Series, where they were defeated by the Southern California Trojans.
! style="" | Regular season |- valign="top"
|- align="center" bgcolor="#ffcccc" | 1 || March 18à|| at Arizona || UA Field ⢠Tucson, Arizona || 3âÂÂ17 || 0âÂÂ1 || â |- align="center" bgcolor="#ffcccc" | 2 || March 19à|| at Arizona || UA Field ⢠Tucson, Arizona || 1âÂÂ15 || 0âÂÂ2 || â |- align="center" bgcolor="#ccffcc" | 3 || March 21à|| at || Unknown ⢠Las Cruces, New Mexico || 17âÂÂ9 || 1âÂÂ2 || â |- align="center" bgcolor="#ccffcc" | 4 || March 22à|| at New Mexico A&M || Unknown ⢠Las Cruces, New Mexico || 11âÂÂ3 || 2âÂÂ2 || â |-
|- align="center" bgcolor="#ccffcc" | 23 || May 21à|| || Jackson Field ⢠Greeley, Colorado || 9âÂÂ8 || 17âÂÂ6 || â |- align="center" bgcolor="#ccffcc" | 24 || May 24à|| at Air Force || Falcon Baseball Field ⢠Colorado Springs, Colorado || 6âÂÂ3 || 18âÂÂ6 || â |-
|- |- ! style="" | Postseason |- valign="top"
|- align="center" bgcolor="#ffcccc" | 25 || May 30à|| at || Cougar Field ⢠Provo, Utah || 3âÂÂ4 || 18âÂÂ7 || â |- align="center" bgcolor="#ccffcc" | 26 || May 31à|| at BYU || Cougar Field ⢠Provo, Utah || 8âÂÂ0 || 19âÂÂ7 || â |- align="center" bgcolor="#ffcccc" | 27 || May 31à|| at BYU || Cougar Field ⢠Provo, Utah || 5âÂÂ9 || 19âÂÂ8 || â |-
|- align="center" bgcolor="#ccffcc" | 28 || June 14 || vs Lafayette || Omaha Municipal Stadium ⢠Omaha, Nebraska || 10âÂÂ5 || 20âÂÂ8 || â |- align="center" bgcolor="#ffcccc" | 29 || June 15 || vs Missouri || Omaha Municipal Stadium ⢠Omaha, Nebraska || 2âÂÂ11 || 20âÂÂ9 || â |- align="center" bgcolor="#ffcccc" | 30 || June 16 || vs Southern California || Omaha Municipal Stadium ⢠Omaha, Nebraska || 1âÂÂ12 || 20âÂÂ10 || â |-