The Philadelphia 76ers have lost the most games by a team in a season, with 73 losses in 1972-73.

team with most losses in a single nba season

TEAM	L	SEASON	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
Philadelphia 76ers	73	1972-73	82	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	72	2015-16	82	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
Denver Nuggets	71	1997-98	82	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	71	1992-93	82	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	70	2009-10	82	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	70	1986-87	82	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	69	2004-05	82	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	69	1993-94	82	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
Detroit Pistons	68	2023-24	82	240.9	109.9	43.3	25.5	6.5	4.7	15.2	40.9	88.2	46.3	11.0	31.7	34.8	17.0	21.7	78.5	19,755	9,010	3,553	2,088	531	384	1,248	1,688
Vancouver Grizzlies	68	1996-97	82	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	68	1982-83	82	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
Washington Wizards	67	2023-24	82	240.6	113.7	41.1	27.9	7.6	5.1	14.0	43.0	91.4	47.0	12.4	35.5	34.8	15.4	20.2	76.4	19,730	9,327	3,368	2,288	623	415	1,147	1,637
Milwaukee Bucks	67	2013-14	82	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	67	2009-10	82	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	67	2007-08	82	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	67	2000-01	82	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	67	1999-00	82	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	67	1996-97	82	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	67	1995-96	82	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	67	1991-92	82	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	67	1988-89	82	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
Cleveland Cavaliers	67	1981-82	82	241.5	103.2	41.0	22.8	7.7	4.4	16.1	41.5	89.4	46.4	0.3	1.7	18.2	19.9	26.6	74.7	19,805	8,463	3,360	1,871	634	357	1,319	2,193
Dallas Mavericks	67	1980-81	82	241.2	101.5	40.1	24.2	6.8	2.6	17.5	39.1	84.5	46.2	0.6	2.0	27.9	22.8	30.3	75.1	19,780	8,322	3,286	1,984	561	214	1,439	2,008
Cleveland Cavaliers	67	1970-71	82	240.0	102.1	48.6	25.2				40.2	94.9	42.4				21.6	29.0	74.6	19,680	8,373	3,982	2,065				2,114
San Diego Rockets	67	1967-68	82	240.9	112.4	66.1	22.4				43.5	104.2	41.7				25.4	35.7	71.1	19,755	9,215	5,418	1,837				2,188