2009–10 Big Ten Conference men's basketball standings
	Conf				Overall
Team	W		L	PCT	W		L	PCT
No. 5 Ohio State†	14	–	4	.778	29	–	8	.784
No. 10 Purdue	14	–	4	.778	29	–	6	.829
No. 13 Michigan State	14	–	4	.778	28	–	9	.757
No. 16 Wisconsin	13	–	5	.722	24	–	9	.727
Illinois	10	–	8	.556	21	–	15	.583
Minnesota	9	–	9	.500	21	–	14	.600
Northwestern	7	–	11	.389	20	–	14	.588
Michigan	7	–	11	.389	15	–	17	.469
Indiana	4	–	14	.222	10	–	21	.323
Iowa	4	–	14	.222	10	–	22	.313
Penn State	3	–	15	.167	11	–	20	.355

† 2010 Big Ten Tournament winner As of April 3, 2010; Rankings from AP Poll

The 2009–10 Northwestern Wildcats men's basketball team represented Northwestern University in the 2009–10 college basketball season. This was head coach Bill Carmody's tenth season at the Northwestern. The Wildcats were members of the Big Ten Conference and played their home games at Welsh-Ryan Arena. They finished the season 20–14, 7–11 in Big Ten play, lost in the quarterfinals of the 2010 Big Ten Conference Men's Basketball Tournament and were invited to the 2010 National Invitation Tournament where they lost in the first round to the University of Rhode Island. Northwestern received its first national (AP) ranking in 41 years, when it was ranked #25 in the December 28th AP poll.

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"*"=indicates player used redshirt season.

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