| Year: | 1958 |
| Team: | USC Trojans |
| Sport: | baseball |
| Conference: | Pacific Coast Conference |
| Short Conf: | PCC |
| Record: | 28–3 |
| Conf Record: | 14–2 |
| Head Coach: | Rod Dedeaux (17th year) |
| Stadium: | Bovard Field |
| Champion: | College World Series champions Pacific Coast Conference champions |
The 1958 USC Trojans baseball team represented the University of Southern California in the 1958 NCAA University Division baseball season. The team was coached by Rod Dedeaux in his 17th season.
The Trojans won the College World Series, defeating the Missouri Tigers in the championship game.
! style="background:#FFCC00;color:#990000;"| Regular season|- valign="top" |- align="center" bgcolor="ddffdd"| March 18 || || 10–0 || 1–0 || –|- align="center" bgcolor="ddffdd"| March 28 || || 7–3 || 2–0 || 1–0|- align="center" bgcolor="ddffdd"| March 29 || Santa Clara || 21–5 || 3–0 || 2–0|-|- align="center" bgcolor="ddffdd"| April 11 || at || 4–2 || 4–0 || 3–0|- align="center" bgcolor="ddffdd"| April 12 || at || 10–5 || 5–0 || 4–0|- align="center" bgcolor="ddffdd"| April 12 || at Stanford || 13–4 || 6–0 || 5–0|- align="center" bgcolor="ffdddd"| April 19 || California || 5–7 || 6–1 || 5–1|- align="center" bgcolor="ddffdd"| April 19 || California || 10–5 || 7–1 || 6–1|- align="center" bgcolor="#ddffdd"| April 25 || at || 13–4 || 8–1 || –|- align="center" bgcolor="ddffdd"| April 29 || || 8–2 || 9–1 || –|-|- align="center" bgcolor="#ddffdd"| May 2 || at || 3–0 || 10–1 || 7–1|- align="center" bgcolor="#ddffdd"| May 3 || UCLA || 21–2 || 11–1 || 8–1|- align="center" bgcolor="ddffdd"| May 6 || || 16–2 || 12–1 || –|- align="center" bgcolor="ddffdd"| May 9 || Stanford || 19–13 || 13–1 || 9–1|- align="center" bgcolor="ddffdd"| May 10 || Stanford || 9–2 || 14–1 || 10–1|- align="center" bgcolor="ddffdd"| May 13 || || 5–4 || 15–1 || –|- align="center" bgcolor="ffdddd"| May 16 || at California || 6–7 || 15–2 || 10–2|- align="center" bgcolor="ddffdd"| May 17 || at Santa Clara || 12–11 || 16–2 || 11–2|- align="center" bgcolor="ddffdd"| May 17 || at Santa Clara || 5–4 || 17–2 || 12–2|- align="center" bgcolor="ddffdd"| May 23 || UCLA || 23–1 || 18–2 || 13–2|- align="center" bgcolor="ddffdd"| May 24 || at UCLA || 15–1 || 19–2 || 14–2|-|-! style="background:#FFCC00;color:#990000;"| Post-season|-|- align="center" bgcolor="ddffdd"| May 30 || || 7–0 || 20–2|- align="center" bgcolor="ddffdd"| May 31 || Oregon State || 15–0 || 21–2|-|- align="center" bgcolor="ddffdd"| June 6 || vs. || 6–0 || 22–2|- align="center" bgcolor="ddffdd"| June 7 || vs. Portland || 11–1 || 23–2|-|- align="center" bgcolor="ffdddd"| June 14 || vs. Holy Cross || Rosenblatt Stadium || 0–3 || 23–3|- align="center" bgcolor="ddffdd"| June 15 || vs. Arizona || Rosenblatt Stadium || 4–0 || 24–3|- align="center" bgcolor="ddffdd"| June 16 || vs. || Rosenblatt Stadium || 12–1 || 25–3|- align="center" bgcolor="ddffdd"| June 17 || vs. Holy Cross || Rosenblatt Stadium || 6–2 || 26–3|- align="center" bgcolor="ddffdd"| June 18 || vs. Missouri || Rosenblatt Stadium || 7–0 || 27–3|- align="center" bgcolor="ddffdd"| June 19 || vs. Missouri || Rosenblatt Stadium || 8–7 || 28–3|-