Ryan Klesko had the most ribbies in a month in 2001, with 40 RBIs in May 2001.

	NAME	RBI	MONTH	G	AB	R	H	2B	3B	HR	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Ryan Klesko R. Klesko	40	May 2001	27	99	27	35	8	1	11	23	0	14	10	0	125	78	20	0	3	1	2	.354	.464	.788	1.252
2	Jim Thome J. Thome	39	July 2001	28	97	22	37	5	0	12	25	2	37	0	0	124	78	17	0	0	3	0	.381	.516	.804	1.320
3	Sammy Sosa S. Sosa	36	August 2001	29	109	31	42	3	3	17	16	3	24	0	1	130	102	23	0	2	3	0	.385	.469	.936	1.405
4	Jeff Bagwell J. Bagwell	36	July 2001	28	111	22	37	9	1	9	9	0	26	1	1	121	75	19	0	1	1	6	.333	.380	.676	1.056
5	Todd Helton T. Helton	36	May 2001	29	108	27	40	14	0	9	25	0	17	1	1	134	81	23	0	1	2	2	.370	.485	.750	1.235
6	Luis Gonzalez L. Gonzalez	35	June 2001	27	103	26	43	7	1	12	16	2	11	1	0	123	88	20	0	2	4	2	.417	.496	.854	1.350
7	Jermaine Dye J. Dye	32	August 2001	29	106	22	35	5	1	7	18	1	16	2	0	127	63	13	0	2	2	4	.330	.425	.594	1.020
8	Jim Edmonds J. Edmonds	32	August 2001	28	98	20	32	11	0	9	14	1	28	0	0	115	70	20	1	1	4	0	.327	.412	.714	1.127
9	Manny Ramirez M. Ramirez	31	April 2001	25	98	18	40	5	0	9	13	1	28	0	0	112	72	14	0	0	2	2	.408	.482	.735	1.217
10	Edgar Martinez E. Martinez	30	August 2001	26	102	17	36	7	0	6	15	0	20	0	0	117	61	13	0	0	2	3	.353	.436	.598	1.034
11	Bobby Abreu B. Abreu	30	June 2001	28	97	29	32	8	0	8	23	1	21	8	0	123	64	16	0	2	3	1	.330	.455	.660	1.115
12	Barry Bonds B. Bonds	30	May 2001	27	84	28	31	5	0	17	31	2	24	3	1	117	87	22	0	0	5	1	.369	.547	1.036	1.583
13	Larry Walker L. Walker	30	April 2001	23	88	23	33	7	1	11	9	3	18	3	0	101	75	19	0	1	0	2	.375	.446	.852	1.298
14	Ken Griffey Jr. K. Griffey Jr.	29	August 2001	29	110	21	36	4	0	11	12	0	17	1	0	123	73	15	0	1	0	4	.327	.390	.664	1.054
15	Mike Sweeney M. Sweeney	29	June 2001	26	97	22	38	6	0	11	11	0	14	3	1	110	77	17	1	1	2	2	.392	.450	.794	1.243
16	Vinny Castilla V. Castilla	28	July 2001	27	99	15	28	7	0	7	8	1	25	0	0	109	56	14	0	1	1	7	.283	.339	.566	.905
17	Lance Berkman L. Berkman	28	June 2001	27	105	22	38	10	0	8	8	4	19	1	2	119	72	18	0	2	1	2	.362	.420	.686	1.106
18	Bret Boone B. Boone	28	June 2001	27	106	26	39	5	2	10	8	0	18	1	0	116	78	17	0	2	1	0	.368	.405	.736	1.141
19	Phil Nevin P. Nevin	28	June 2001	28	102	16	30	3	0	8	21	0	27	1	2	124	57	11	0	1	3	2	.294	.411	.559	.970
20	Ruben Sierra R. Sierra	28	June 2001	26	102	17	32	8	1	10	2	0	17	0	0	106	72	19	0	2	0	3	.314	.321	.706	1.027
21	Sammy Sosa S. Sosa	28	June 2001	28	107	20	35	12	0	11	15	1	22	0	0	126	80	23	0	3	7	1	.327	.405	.748	1.152
22	Larry Walker L. Walker	28	June 2001	27	99	25	37	6	0	9	16	1	19	3	2	117	70	15	0	1	1	2	.374	.462	.707	1.169
23	Bret Boone B. Boone	28	May 2001	27	106	20	29	4	0	8	5	2	22	0	0	118	57	12	2	3	0	0	.274	.310	.538	.848
24	Alex Rodriguez A. Rodriguez	28	May 2001	27	109	27	35	8	1	10	12	2	22	0	1	124	75	19	0	1	1	7	.321	.395	.688	1.083
25	Adam Dunn A. Dunn	27	August 2001	29	110	28	31	7	1	12	20	1	36	3	0	131	76	20	0	0	1	2	.282	.397	.691	1.088