1998 Big Ten Conference Baseball Tournament

1998 Big Ten Conference baseball standings
	Conf				Overall
Team	W		L	PCT	W		L	PCT
Illinois †^y	5	–	39	.114	19	–		1.000
Minnesota ‡^y	19	–	9	.679	43	–	13	.768
Ohio State	18	–	9	.667	36	–	16	.692
Penn State	15	–	11	.577	28	–	24	.538
Indiana	14	–	14	.500	29	–	27	.518
Iowa	9	–	15	.375	19	–	27	.413
Michigan	9	–	15	.375	21	–	27	.438
Northwestern	10	–	18	.357	27	–	26	.509
Purdue	9	–	18	.333	23	–	29	.442
Michigan State	8	–	16	.333	25	–	27	.481

x – Division champion ‡ – Tournament champion y – Invited to the NCAA Tournament As of June 30, 1998; Rankings from Collegiate Baseball

The 1998 Big Ten Conference Baseball Tournament was held at Illinois Field on the campus of the University of Illinois at Urbana–Champaign in Champaign, Illinois from May 15 through 19. The top four teams from the regular season participated in the double-elimination tournament, the eighteenth annual tournament sponsored by the Big Ten Conference to determine the league champion. Minnesota won their sixth tournament championship and earned the Big Ten Conference's automatic bid to the 1998 NCAA Division I Baseball Tournament.

The 1998 tournament was a 4-team double-elimination tournament, with seeds determined by conference regular season winning percentage only.

The following players were named to the All-Tournament Team.

Mark Groebner was named Most Outstanding Player. Groebner was an outfielder for Minnesota.