James Harden has committed the most turnovers in a season with 464 turnovers in 2016-17.

	NAME	TOV	SEASON	TM	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	PF	+/-
1	James Harden J. Harden	464	2016-17	HOU	81	36.4	29.1	8.1	11.2	1.5	0.5	8.3	18.9	44.0	3.2	9.3	34.7	9.2	10.9	84.7	61.3	1.2	7.0	5.7	2,947	2,356	659	907	121	38	215	+425
2	Russell Westbrook R. Westbrook	438	2016-17	OKC	81	34.6	31.6	10.7	10.4	1.6	0.4	10.2	24.0	42.5	2.5	7.2	34.3	8.8	10.4	84.5	55.4	1.7	9.0	5.4	2,802	2,558	864	840	132	31	190	+251
3	James Harden J. Harden	387	2018-19	HOU	78	36.8	36.1	6.6	7.5	2.0	0.7	10.8	24.5	44.2	4.8	13.2	36.8	9.7	11.0	87.9	61.6	0.8	5.8	5.0	2,867	2,818	518	586	158	58	244	+357
4	Russell Westbrook R. Westbrook	381	2017-18	OKC	80	36.4	25.4	10.1	10.3	1.8	0.3	9.5	21.1	44.9	1.2	4.1	29.8	5.2	7.1	73.7	52.4	1.9	8.2	4.8	2,914	2,028	804	820	147	20	200	+383
5	James Harden J. Harden	374	2015-16	HOU	82	38.1	29.0	6.1	7.5	1.7	0.6	8.7	19.7	43.9	2.9	8.0	35.9	8.8	10.2	86.0	59.8	0.8	5.3	4.6	3,125	2,376	501	612	139	51	229	+125
6	Artis Gilmore A. Gilmore	366	1977-78	CHI	82	37.4	22.9	13.1	3.2	0.5	2.2	8.6	15.4	55.9				5.7	8.2	70.4	60.4	3.9	9.2	4.5	3,067	1,879	1,071	263	42	181	261
7	Kevin Porter K. Porter	360	1977-78	TOT	82	34.3	15.0	2.6	10.2	1.5	0.2	6.0	12.9	46.9				3.0	3.9	76.3	51.6	0.6	2.0	4.4	2,813	1,234	214	837	123	15	283
8	Micheal Ray Richardson M. Ray Richardson	359	1979-80	NYK	82	37.3	15.3	6.6	10.1	3.2	0.4	6.1	13.0	47.2	0.3	1.3	24.5	2.7	4.1	66.0	51.7	1.8	4.7	4.4	3,060	1,254	539	832	265	35	260
9	Trae Young T. Young	355	2024-25	ATL	76	36.0	24.2	3.1	11.6	1.2	0.2	7.4	18.1	41.1	2.9	8.4	34.0	6.5	7.4	87.5	56.7	0.5	2.6	4.7	2,739	1,841	236	880	91	12	145	+34
10	Ricky Sobers R. Sobers	352	1977-78	IND	79	38.2	18.2	4.1	7.4	2.2	0.3	7.0	15.5	45.3				4.2	5.1	82.5	51.4	1.2	3.0	4.5	3,019	1,436	327	584	170	23	308
11	Charles Barkley C. Barkley	350	1985-86	PHI	80	36.9	20.0	12.8	3.9	2.2	1.6	7.4	13.0	57.2	0.2	0.9	22.7	5.0	7.2	68.5	61.9	4.4	8.4	4.4	2,952	1,603	1,026	312	173	125	333
12	Reggie Theus R. Theus	348	1979-80	CHI	82	36.9	20.2	4.0	6.3	1.4	0.2	6.9	14.3	48.3	0.3	1.3	26.7	6.1	7.3	83.8	57.9	1.7	2.3	4.2	3,029	1,660	329	515	114	20	262
13	LeBron James L. James	347	2017-18	CLE	82	36.9	27.5	8.6	9.1	1.4	0.9	10.5	19.3	54.2	1.8	5.0	36.7	4.7	6.5	73.1	62.1	1.2	7.5	4.2	3,026	2,251	709	747	116	71	136	+104
14	George McGinnis G. McGinnis	346	1978-79	DEN	76	33.6	22.6	11.4	3.7	1.7	0.7	7.9	16.8	47.4				6.7	10.1	66.5	53.3	3.4	8.0	4.6	2,552	1,715	864	283	129	52	321
15	Bob McAdoo B. McAdoo	346	1977-78	NYK	79	40.3	26.5	12.8	3.8	1.3	1.6	10.3	19.8	52.0				5.9	8.2	72.7	56.7	3.0	9.8	4.4	3,182	2,097	1,010	298	105	126	297
16	Ron Harper R. Harper	345	1986-87	CLE	82	37.4	22.9	4.8	4.8	2.5	1.0	9.0	19.7	45.5	0.2	1.1	21.3	4.7	6.9	68.4	50.3	2.1	2.7	4.2	3,064	1,874	392	394	209	84	247
17	Allen Iverson A. Iverson	344	2004-05	PHI	75	42.3	30.7	4.0	7.9	2.4	0.1	10.3	24.2	42.4	1.4	4.5	30.8	8.7	10.5	83.5	53.2	0.7	3.3	4.6	3,174	2,302	299	596	180	9	140	+12
18	Isiah Thomas I. Thomas	343	1986-87	DET	81	37.2	20.6	3.9	10.0	1.9	0.2	7.7	16.7	46.3	0.2	1.2	19.4	4.9	6.4	76.8	52.8	1.0	2.9	4.2	3,013	1,671	319	813	153	20	251
19	Russell Westbrook R. Westbrook	342	2015-16	OKC	80	34.4	23.5	7.8	10.4	2.0	0.3	8.2	18.1	45.4	1.3	4.3	29.6	5.8	7.2	81.2	55.4	1.8	6.0	4.3	2,749	1,878	626	834	163	20	200	+635
20	Jeff Ruland J. Ruland	342	1983-84	WAS	75	41.1	22.2	12.3	3.9	0.9	1.0	8.0	13.8	57.9	0.0	0.1	14.3	6.2	8.5	73.3	63.3	3.5	8.8	4.6	3,082	1,665	922	296	68	72	285
21	James Harden J. Harden	341	2024-25	LAC	79	35.3	22.8	5.8	8.7	1.5	0.7	6.7	16.4	41.0	3.0	8.5	35.2	6.4	7.3	87.4	58.2	0.7	5.1	4.3	2,789	1,802	456	687	118	55	162	+344
22	Allen Iverson A. Iverson	337	1996-97	PHI	76	40.1	23.5	4.1	7.5	2.1	0.3	8.2	19.8	41.6	2.0	6.0	34.1	5.0	7.2	70.2	51.3	1.5	2.6	4.4	3,045	1,787	312	567	157	24	233	-439
23	Kevin Porter K. Porter	337	1978-79	DET	82	37.4	15.4	2.5	13.4	1.9	0.1	6.5	13.5	48.1				2.3	3.2	72.2	51.3	0.8	1.8	4.1	3,064	1,260	209	1,099	158	5	302
24	Ray Williams R. Williams	335	1982-83	KCK	72	30.1	15.4	4.5	7.9	1.7	0.4	5.8	14.8	39.2	0.2	1.0	20.3	3.6	4.6	76.9	45.7	1.3	3.3	4.7	2,170	1,109	327	569	120	26	248
25	Jim Jackson J. Jackson	334	1993-94	DAL	82	37.4	19.2	4.7	4.6	1.1	0.3	7.8	17.5	44.5	0.2	0.7	28.3	3.5	4.2	82.1	49.7	2.1	2.7	4.1	3,066	1,576	388	374	87	25	161