Since 1924, the Boston Red Sox have the most walks per game by a team in a season, with 5.39 in 1949.

	TEAM	BB/G	BB	G	SEASON	W%	W	L	AB	R	H	2B	3B	HR	RBI	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Red Sox	5.39	835	155	1949	.623	96	58	5,320	896	1,500	272	36	131	835	17	510	43	25	6,250	2,237	439	78			169	.282	.381	.420	.802
2	Red Sox	5.3	821	155	1948	.619	96	59	5,363	907	1,471	277	40	121	854	32	549	38	17	6,282	2,191	438	66			144	.274	.374	.409	.782
3	Athletics	5.08	783	154	1949	.526	81	73	5,123	726	1,331	214	49	82	680	25	493	36	25	6,048	1,889	345	117			160	.260	.361	.369	.729
4	Browns	4.94	775	157	1941	.455	70	84	5,408	765	1,440	281	58	91	729	13	552	50	39	6,285	2,110	430	89			118	.266	.360	.390	.750
5	Red Sox	4.91	756	154	1951	.565	87	67	5,378	804	1,428	233	32	127	757	18	594	20	21	6,211	2,106	392	59			169	.266	.358	.392	.750
6	Yankees	4.9	765	156	1932	.695	107	47	5,476	1,002	1,564	279	82	160	954	27	526	77	66	6,344	2,487	521	76				.286	.376	.454	.830
7	Yankees	4.84	750	155	1931	.614	94	59	5,608	1,067	1,667	276	78	155	990	28	554	139	68	6,473	2,564	509	87				.297	.383	.457	.840
8	Tigers	4.83	748	155	1949	.565	87	67	5,259	751	1,405	215	51	88	707	23	501	39	52	6,137	1,986	354	107			164	.267	.361	.378	.739
9	Tigers	4.82	761	158	1947	.552	85	69	5,276	714	1,363	234	42	103	662	13	563	52	60	6,147	1,990	379	97			130	.258	.353	.377	.730
10	Mariners	4.78	775	162	2000	.562	91	71	5,497	907	1,481	300	26	198	869	48	1,073	122	56	6,444	2,427	524	63	61	34	129	.269	.361	.442	.803
11	Yankees	4.77	749	157	1938	.651	99	53	5,410	966	1,480	283	63	174	918	39	617	91	28	6,259	2,411	520	61				.274	.366	.446	.812
12	Athletics	4.75	770	162	1999	.537	87	75	5,519	893	1,430	287	20	235	845	71	1,129	70	37	6,440	2,462	542	39	41	32	129	.259	.355	.446	.801
13	Dodgers	4.72	732	155	1947	.610	94	60	5,249	774	1,428	241	50	83	719	29	561	88		6,125	2,018	374	115			87	.272	.364	.384	.749
14	Tigers	4.72	765	162	1993	.525	85	77	5,620	899	1,546	282	38	178	853	35	1,122	104	63	6,505	2,438	498	33	52	50	101	.275	.362	.434	.796
15	Athletics	4.71	725	154	1948	.545	84	70	5,181	729	1,345	231	47	68	684	22	523	40	32	6,048	1,874	346	120			137	.260	.353	.362	.715
16	Yankees	4.7	729	155	1949	.630	97	57	5,196	829	1,396	215	60	115	760	32	539	58	30	6,041	2,076	390	84			141	.269	.362	.400	.762
17	Indians	4.69	723	154	1955	.604	93	61	5,146	698	1,325	195	31	148	657	35	715	28	24	6,050	2,026	374	87	59	36	112	.257	.349	.394	.743
18	Red Sox	4.69	727	155	1956	.545	84	70	5,349	780	1,473	261	45	139	752	25	689	28	19	6,215	2,241	445	68	46	41	153	.275	.362	.419	.781
19	Yankees	4.69	530	113	1994	.619	70	43	3,986	670	1,155	238	16	139	632	31	660	55	40	4,611	1,842	393	27	37	34	112	.290	.374	.462	.836
20	Red Sox	4.67	719	154	1950	.610	94	60	5,516	1,027	1,665	287	61	161	974	25	580	32	17	6,322	2,557	509	62			153	.302	.385	.464	.848
21	Athletics	4.66	750	161	2000	.565	91	70	5,560	947	1,501	281	23	239	908	52	1,159	40	15	6,432	2,545	543	26	44	32	147	.270	.360	.458	.817
22	Yankees	4.61	701	152	1939	.702	106	45	5,300	967	1,521	259	55	166	904	36	543	72	37	6,129	2,388	480	92			99	.287	.374	.451	.825
23	Yankees	4.61	700	152	1933	.607	91	59	5,271	927	1,495	241	75	144	855	17	507	76	59	6,066	2,318	460	78				.284	.369	.440	.809
24	Tigers	4.6	722	157	1950	.617	95	59	5,381	837	1,518	285	50	114	788	19	481	23	40	6,232	2,245	449	110			162	.282	.369	.417	.786
25	Red Sox	4.59	707	154	1955	.545	84	70	5,273	755	1,392	241	39	137	709	29	730	43	17	6,131	2,122	417	69	53	44	125	.264	.351	.402	.753