Between the 1939-40 and 2020-21 seasons, the Charlotte Bobcats had the worst record by a team in a season, with a record of 7-59 in 2011-12.

worst nba records by season 1939-40 to 2020-21

TEAM	REC	SEASON	GP	W%	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF
Charlotte Bobcats	7-59	2011-12	66	.106	240.8	87.0	39.0	20.1	6.0	5.5	14.5	33.2	80.2	41.4	4.0	13.5	29.5	16.5	22.2	74.6	15,890	5,739	2,571	1,326	397	361	957	1,249
Philadelphia 76ers	9-73	1972-73	82	.110	240.6	104.1	50.9	20.6				42.3	100.8	42.0				19.5	26.0	75.0	19,730	8,540	4,174	1,688				1,984
Philadelphia 76ers	10-72	2015-16	82	.122	241.5	97.4	41.2	21.5	8.3	6.0	16.4	36.2	84.0	43.1	9.3	27.5	33.9	15.7	22.6	69.4	19,805	7,988	3,382	1,765	680	495	1,343	1,780
Providence Steam Rollers	6-42	1947-48	48	.125	241.0	69.1		7.2				26.4	96.5	27.4				16.3	26.6	61.3	11,570	3,318		347				1,105
Denver Nuggets	11-71	1997-98	82	.134	240.6	89.0	39.0	18.9	8.1	4.8	16.0	32.6	78.2	41.7	3.5	10.9	32.3	20.2	26.2	77.2	19,730	7,300	3,197	1,547	664	393	1,312	1,937
Dallas Mavericks	11-71	1992-93	82	.134	240.6	99.3	42.7	20.5	7.9	4.3	17.8	38.6	88.7	43.5	3.5	10.2	33.8	18.7	26.5	70.5	19,730	8,141	3,499	1,683	649	355	1,459	2,302
New Jersey Nets	12-70	2009-10	82	.146	241.2	92.4	39.7	18.8	7.0	4.8	14.4	34.3	79.9	42.9	4.6	14.5	31.8	19.2	24.6	78.0	19,780	7,575	3,255	1,540	573	393	1,182	1,643
Los Angeles Clippers	12-70	1986-87	82	.146	241.2	104.5	41.1	24.0	9.2	5.3	18.2	40.4	89.4	45.2	1.0	4.2	22.4	22.8	30.7	74.2	19,780	8,566	3,368	1,971	751	432	1,493	2,004
Atlanta Hawks	13-69	2004-05	82	.159	242.1	92.7	41.9	19.7	7.7	4.2	16.1	35.9	81.4	44.1	3.7	11.9	31.2	17.3	24.3	71.1	19,855	7,605	3,435	1,614	629	344	1,319	2,009
Dallas Mavericks	13-69	1993-94	82	.159	240.6	95.1	41.7	19.9	9.4	3.6	17.0	37.3	86.2	43.2	2.9	9.4	31.2	17.7	23.7	74.7	19,730	7,801	3,421	1,629	767	299	1,393	2,007
Vancouver Grizzlies	8-42	1998-99	50	.160	243.5	88.9	40.2	19.3	8.4	4.0	17.0	32.9	76.8	42.8	3.0	9.1	32.7	20.2	28.2	71.7	12,175	4,443	2,009	964	420	199	848	1,123
Vancouver Grizzlies	14-68	1996-97	82	.171	241.2	89.2	38.8	22.7	8.0	5.7	15.9	34.4	78.7	43.7	5.4	15.5	34.9	15.0	21.1	70.9	19,780	7,313	3,178	1,862	657	464	1,301	1,755
Houston Rockets	14-68	1982-83	82	.171	240.6	99.3	42.3	23.5	7.9	5.1	19.2	40.7	90.8	44.8	0.8	3.3	24.7	17.1	23.6	72.5	19,730	8,145	3,466	1,931	646	422	1,571	2,131
Philadelphia Warriors	12-57	1952-53	70	.171	242.5	79.1	53.8	21.6				28.4	79.2	35.8				22.3	32.8	67.9	16,975	5,534	3,763	1,513				1,860
Denver Nuggets	11-51	1949-50	62	.177	240.0	77.7		16.8				27.9	83.6	33.4				21.9	32.2	67.8	14,880	4,817		1,044				1,692
Los Angeles Clippers	9-41	1998-99	50	.180	242.5	90.4	39.2	16.4	8.5	4.7	15.9	34.2	80.1	42.7	4.3	13.4	32.0	17.7	24.5	72.1	12,125	4,519	1,958	820	424	236	796	1,223
Milwaukee Bucks	15-67	2013-14	82	.183	242.4	95.5	41.1	21.5	6.6	4.9	15.1	36.0	82.2	43.8	6.7	18.9	35.3	16.8	22.5	74.7	19,880	7,829	3,370	1,760	541	403	1,238	1,713
Minnesota Timberwolves	15-67	2009-10	82	.183	241.2	98.2	42.9	19.8	7.3	3.7	16.3	37.9	84.4	44.9	4.9	14.4	34.1	17.5	23.5	74.6	19,780	8,051	3,518	1,626	597	306	1,333	1,699
Miami Heat	15-67	2007-08	82	.183	241.8	91.4	37.6	20.0	7.2	4.3	14.7	34.2	77.3	44.3	6.0	16.7	35.8	16.9	23.2	72.7	19,830	7,491	3,085	1,644	589	355	1,202	1,670
Chicago Bulls	15-67	2000-01	82	.183	242.1	87.6	38.9	22.1	8.2	4.6	15.8	33.2	78.2	42.4	4.0	11.6	34.6	17.2	23.3	73.9	19,855	7,181	3,186	1,810	675	379	1,292	1,902
Los Angeles Clippers	15-67	1999-00	82	.183	240.3	92.0	40.6	18.0	7.0	6.0	16.2	35.1	82.4	42.6	5.2	15.5	33.9	16.6	22.3	74.6	19,705	7,546	3,332	1,479	578	494	1,325	1,821
Boston Celtics	15-67	1996-97	82	.183	242.7	100.6	40.0	21.9	9.9	3.8	16.4	37.4	85.0	44.0	5.7	16.2	35.1	20.1	26.8	75.0	19,905	8,248	3,283	1,792	810	315	1,342	1,915
Vancouver Grizzlies	15-67	1995-96	82	.183	242.4	89.8	38.1	20.8	8.9	4.1	16.4	33.8	79.1	42.8	4.5	13.8	32.9	17.6	24.4	72.4	19,880	7,362	3,127	1,706	728	333	1,347	1,852
Minnesota Timberwolves	15-67	1991-92	82	.183	241.5	100.5	40.7	24.7	7.5	6.4	14.1	41.0	89.5	45.8	1.5	4.8	32.0	16.8	22.6	74.3	19,805	8,237	3,335	2,025	619	526	1,157	1,866
Miami Heat	15-67	1988-89	82	.183	242.1	97.8	42.9	23.9	9.1	5.0	21.1	39.3	86.8	45.3	1.2	3.6	32.6	18.0	25.6	70.2	19,855	8,016	3,520	1,958	744	408	1,728	2,124