Bob Pettit has the lowest winning percentage by an MVP with a win percentage above .000 in a season, winning 45.8 percent of the time in 1955-56.

Interpreted as:

lowest mvp in a regular season win percentage by a player

NAME	W%	MVP	SEASON	TM	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Bob Pettit	.458	1	1955-56	STL	72	38.8	25.7	16.2	2.6				9.0	20.9	42.9				7.7	10.5	73.6	2,794	1,849	1,164	189				202
Kareem Abdul-Jabbar	.488	1	1975-76	LAL	82	41.2	27.7	16.9	5.0	1.5	4.1		11.1	21.1	52.9				5.5	7.8	70.3	3,379	2,275	1,383	413	119	338		292
Russell Westbrook	.568	1	2016-17	OKC	81	34.6	31.6	10.7	10.4	1.6	0.4	5.4	10.2	24.0	42.5	2.5	7.2	34.3	8.8	10.4	84.5	2,802	2,558	864	840	132	31	438	190	+251
Moses Malone	.568	1	1981-82	HOU	81	42.0	31.1	14.7	1.8	0.9	1.5	3.6	11.7	22.5	51.9	0.0	0.1	0.0	7.8	10.2	76.2	3,398	2,520	1,188	142	76	125	294	208
Moses Malone	.573	1	1978-79	HOU	82	41.3	24.8	17.6	1.8	1.0	1.5	4.0	8.7	16.2	54.0				7.3	9.9	73.9	3,390	2,031	1,444	147	79	119	326	223
Bob McAdoo	.598	1	1974-75	BUF	82	43.2	34.5	14.1	2.2	1.1	2.1		13.4	26.1	51.2				7.8	9.7	80.5	3,539	2,831	1,155	179	92	174		278
Michael Jordan	.610	1	1987-88	CHI	82	40.4	35.0	5.5	5.9	3.2	1.6	3.1	13.0	24.4	53.5	0.1	0.6	13.2	8.8	10.5	84.1	3,311	2,868	449	485	259	131	252	270
Nikola Jokic	.622	1	2021-22	DEN	74	33.5	27.1	13.8	7.9	1.5	0.9	3.8	10.3	17.7	58.3	1.3	3.9	33.7	5.1	6.3	81.0	2,476	2,004	1,019	584	109	63	281	191	+442
Bob Cousy	.641	1	1956-57	BOS	64	36.9	20.6	4.8	7.5				7.5	19.8	37.8				5.7	6.9	82.1	2,364	1,319	309	478				134
Kareem Abdul-Jabbar	.646	1	1976-77	LAL	82	36.8	26.2	13.3	3.9	1.2	3.2		10.8	18.7	57.9				4.6	6.5	70.1	3,016	2,152	1,090	319	101	261		262
Joel Embiid	.652	1	2022-23	PHI	66	34.6	33.1	10.2	4.2	1.0	1.7	3.4	11.0	20.1	54.8	1.0	3.0	33.0	10.0	11.7	85.7	2,284	2,183	670	274	66	112	226	205	+424
Nikola Jokic	.653	1	2020-21	DEN	72	34.6	26.4	10.8	8.3	1.3	0.7	3.1	10.2	18.0	56.6	1.3	3.3	38.8	4.8	5.5	86.8	2,488	1,898	780	599	95	48	222	192	+384
Wilt Chamberlain	.653	1	1959-60	PHI	72	46.4	37.6	27.0	2.3				14.8	32.1	46.1				8.0	13.8	58.2	3,338	2,707	1,941	168				150
Bob Pettit	.681	1	1958-59	STL	72	39.9	29.2	16.4	3.1				10.0	22.8	43.8				9.3	12.2	75.9	2,873	2,105	1,182	221				200
Steve Nash	.684	1	2005-06	PHX	79	35.4	18.8	4.2	10.5	0.8	0.2	3.5	6.8	13.4	51.2	1.9	4.3	43.9	3.3	3.5	92.1	2,796	1,489	333	826	61	12	276	120	+472
Oscar Robertson	.684	1	1963-64	CIN	79	45.1	31.4	9.9	11.0				10.6	22.0	48.3				10.1	11.9	85.3	3,559	2,480	783	868				280
Kobe Bryant	.695	1	2007-08	LAL	82	38.9	28.3	6.3	5.4	1.8	0.5	3.1	9.5	20.6	45.9	1.8	5.1	36.1	7.6	9.0	84.0	3,192	2,323	517	441	151	40	257	227	+598
Wes Unseld	.695	1	1968-69	BAL	82	36.2	13.8	18.2	2.6				5.2	10.9	47.6				3.4	5.6	60.5	2,970	1,131	1,491	213				276
Wilt Chamberlain	.696	1	1965-66	PHI	79	47.3	33.5	24.6	5.2				13.6	25.2	54.0				6.3	12.4	51.3	3,737	2,649	1,943	414				171
Magic Johnson	.701	1	1988-89	LAL	77	37.5	22.5	7.9	12.8	1.8	0.3	4.1	7.5	14.8	50.9	0.8	2.4	31.4	6.7	7.3	91.1	2,886	1,730	607	988	138	22	312	172
Allen Iverson	.704	1	2000-01	PHI	71	42.0	31.1	3.8	4.6	2.5	0.3	3.3	10.7	25.5	42.0	1.4	4.3	32.0	8.2	10.1	81.4	2,979	2,207	273	325	178	20	237	147	+368
Kevin Garnett	.707	1	2003-04	MIN	82	39.4	24.2	13.9	5.0	1.5	2.2	2.6	9.8	19.6	49.9	0.1	0.5	25.6	4.5	5.7	79.1	3,231	1,987	1,139	409	120	178	212	202	+614
Tim Duncan	.707	1	2001-02	SAS	82	40.6	25.5	12.7	3.7	0.7	2.5	3.2	9.3	18.3	50.8	0.0	0.1	10.0	6.8	8.5	79.9	3,329	2,089	1,042	307	61	203	263	217	+563
Bill Russell	.710	1	1957-58	BOS	69	38.3	16.6	22.7	2.9				6.6	15.0	44.2				3.3	6.4	51.9	2,640	1,142	1,564	202				181
Hakeem Olajuwon	.713	1	1993-94	HOU	80	41.0	27.3	11.9	3.6	1.6	3.7	3.4	11.2	21.2	52.8	0.1	0.2	42.1	4.9	6.8	71.6	3,277	2,184	955	287	128	297	271	289