Nate McMillan has the highest steal percentage with 125+ steals in a season, at 5.8 percent in 1993-94.

highest stl% by a player in a season with 125+ stl

NAME	STL%	STL	SEASON	TM	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	BLK	TOV	PF	+/-
Nate McMillan	5.8	216	1993-94	SEA	73	25.8	6.0	3.9	5.3	3.0	0.3	1.7	2.4	5.4	44.7	0.7	1.8	39.1	0.4	0.8	56.4	1,887	437	283	387	22	126	201
Ron Lee	5.0	225	1977-78	PHX	82	23.5	12.2	3.1	3.7	2.7	0.2	2.7	5.1	11.6	43.9				2.1	2.8	74.6	1,928	1,004	254	305	17	221	257
Alvin Robertson	4.8	301	1985-86	SAS	82	35.1	17.0	6.3	5.5	3.7	0.5	3.1	6.9	13.3	51.4	0.1	0.4	27.6	3.2	4.0	79.5	2,878	1,392	516	448	40	256	296
Dudley Bradley	4.8	211	1979-80	IND	82	24.7	8.4	2.7	3.1	2.6	0.6	2.0	3.4	7.4	45.2	0.0	0.1	40.0	1.7	2.1	78.2	2,027	688	223	252	48	166	194
Dudley Bradley	4.7	186	1980-81	IND	82	22.8	8.0	2.4	2.3	2.3	0.5	1.5	3.2	6.8	47.4	0.0	0.2	12.5	1.5	2.2	70.2	1,867	657	193	188	37	122	236
Alvin Robertson	4.7	246	1990-91	MIL	81	32.1	13.6	5.7	5.5	3.0	0.2	2.6	5.4	11.2	48.5	0.3	0.8	36.5	2.5	3.2	75.7	2,598	1,098	459	444	16	212	273
Darrell Walker	4.6	127	1983-84	NYK	82	16.1	7.9	2.0	3.5	1.5	0.2	2.4	2.6	6.3	41.7	0.0	0.2	26.7	2.5	3.2	79.1	1,324	644	167	284	15	194	202
Alvin Robertson	4.6	260	1986-87	SAS	81	33.3	17.7	5.2	5.2	3.2	0.4	3.0	7.3	15.6	46.6	0.2	0.6	27.1	3.0	4.0	75.3	2,697	1,435	424	421	35	243	264
Eddie Jordan	4.5	126	1977-78	TOT	73	16.6	7.7	1.6	2.4	1.7	0.3	1.5	2.9	7.4	40.0				1.8	2.3	78.4	1,213	561	119	177	19	106	94
Metta Sandiford-Artest	4.5	141	2001-02	TOT	55	29.9	13.2	4.9	2.3	2.6	0.7	2.1	4.9	11.6	42.3	1.0	3.1	31.2	2.5	3.7	66.7	1,642	727	271	127	39	118	217	-22
Tony Allen	4.5	129	2010-11	MEM	72	20.8	8.9	2.7	1.4	1.8	0.6	1.2	3.5	6.8	51.0	0.1	0.3	17.4	1.9	2.5	75.3	1,494	643	193	104	44	86	161	+49
John Stockton	4.4	177	1986-87	UTA	82	22.7	7.9	1.8	8.2	2.2	0.2	2.0	2.8	5.6	49.9	0.1	0.5	18.4	2.2	2.8	78.2	1,858	648	151	670	14	164	224
Kendall Gill	4.4	134	1998-99	NJN	50	32.1	11.8	4.9	2.5	2.7	0.5	1.4	4.7	11.9	39.8	0.0	0.3	11.8	2.3	3.3	68.3	1,606	588	244	123	26	71	162	-138
Nate McMillan	4.4	173	1992-93	SEA	73	27.1	7.5	4.2	5.3	2.4	0.5	1.9	2.9	6.3	46.4	0.3	0.9	38.5	1.3	1.8	70.9	1,977	546	306	384	33	139	240
Magic Johnson	4.3	127	1980-81	LAL	37	37.1	21.6	8.6	8.6	3.4	0.7	3.9	8.4	15.9	53.2	0.1	0.5	17.6	4.6	6.1	76.0	1,371	798	320	317	27	143	100
Ron Lee	4.3	166	1980-81	DET	82	22.3	4.2	2.7	4.4	2.0	0.4	2.1	1.4	3.9	35.0	0.0	0.2	15.4	1.4	1.9	72.4	1,829	341	220	362	29	173	260
Alvin Robertson	4.3	210	1991-92	MIL	82	30.0	12.3	4.3	4.4	2.6	0.4	2.7	4.8	11.2	43.0	0.8	2.6	31.9	1.8	2.4	76.3	2,463	1,010	350	360	32	223	263
Don Buse	4.3	281	1976-77	IND	81	36.4	8.0	3.3	8.5	3.5	0.2		3.3	7.9	41.6				1.4	1.8	78.6	2,947	646	270	685	16		129
Eric Murdock	4.3	135	1995-96	TOT	73	22.9	8.9	2.3	4.5	1.8	0.1	1.8	3.3	8.0	41.6	0.6	2.0	31.0	1.6	2.0	79.7	1,673	647	169	327	9	132	140
Micheal Williams	4.2	150	1990-91	IND	73	23.4	11.1	2.4	4.8	2.1	0.2	2.1	3.6	7.2	49.9	0.0	0.1	14.3	4.0	4.5	87.9	1,706	813	176	348	17	150	202
Brevin Knight	4.2	196	1997-98	CLE	80	31.0	9.0	3.2	8.2	2.5	0.2	2.4	3.3	7.4	44.1	0.0	0.1	0.0	2.5	3.1	80.1	2,483	723	253	656	18	194	271	+298
Slick Watts	4.2	190	1974-75	SEA	82	25.1	6.8	3.2	6.1	2.3	0.1		2.8	6.7	42.1				1.1	1.9	60.8	2,056	557	262	499	12		254
Slick Watts	4.2	261	1975-76	SEA	82	33.9	13.0	4.5	8.1	3.2	0.2		5.3	12.4	42.7				2.4	4.2	57.8	2,776	1,065	365	661	16		270
Ricky Rubio	4.2	137	2012-13	MIN	57	29.7	10.7	4.0	7.3	2.4	0.1	3.0	3.2	9.0	36.0	0.5	1.6	29.3	3.7	4.6	79.9	1,691	608	229	418	5	172	143	-88
Fat Lever	4.1	159	1993-94	DAL	81	24.0	6.9	3.5	2.6	2.0	0.2	1.1	2.8	6.9	40.8	0.3	0.9	35.1	0.9	1.2	76.5	1,947	555	283	213	15	88	155