The Boston Celtics had their best record in a season in 1972-73, with a record of 68-14.

what was the best record in a season for the celtics

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
Boston Celtics	68-14	1972-73	82	.829	240.6	112.7	58.6	28.3				46.5	103.8	44.8				19.7	25.3	78.0	19,730	9,238	4,802	2,320				1,805
Boston Celtics	67-15	1985-86	82	.817	242.1	114.1	46.4	29.1	7.8	6.2	16.6	45.3	89.2	50.8	1.7	4.8	35.1	21.8	27.4	79.4	19,855	9,359	3,807	2,387	641	511	1,360	1,756
Boston Celtics	66-16	2007-08	82	.805	240.9	100.5	42.0	22.4	8.5	4.6	15.2	36.4	76.7	47.5	7.3	19.1	38.1	20.5	26.5	77.1	19,755	8,245	3,445	1,833	696	379	1,246	1,864
Boston Celtics	59-16	1959-60	75	.787	241.0	124.5	80.2	24.7				49.9	119.6	41.7				24.7	33.6	73.4	18,075	9,337	6,014	1,849				1,856
Boston Celtics	64-18	2023-24	82	.780	241.8	120.6	46.3	26.9	6.8	6.6	11.9	43.9	90.2	48.7	16.5	42.5	38.8	16.3	20.2	80.7	19,830	9,887	3,799	2,207	557	538	979	1,326
Boston Celtics	62-18	1964-65	80	.775	240.9	112.8	71.9	22.2				44.6	107.6	41.4				23.6	32.3	73.1	19,275	9,024	5,748	1,772				2,065
Boston Celtics	63-19	1984-85	82	.768	240.3	114.8	45.7	27.9	7.9	5.0	16.2	45.4	89.3	50.8	1.3	3.8	35.6	22.7	28.1	80.6	19,705	9,412	3,746	2,287	645	414	1,332	1,781
Boston Celtics	63-19	1981-82	82	.768	241.2	112.0	45.6	25.9	8.0	6.9	17.7	44.6	89.4	49.9	0.6	2.2	26.6	22.2	30.0	74.0	19,780	9,180	3,742	2,126	652	568	1,452	2,014
Boston Celtics	62-20	2008-09	82	.756	242.4	100.9	42.1	22.7	7.6	4.7	15.6	37.5	77.2	48.6	6.6	16.5	39.7	19.4	25.3	76.5	19,880	8,275	3,455	1,862	621	387	1,280	1,897
Boston Celtics	62-20	1983-84	82	.756	243.4	112.1	45.1	25.9	8.2	5.2	17.3	44.1	88.2	50.0	0.7	2.8	24.0	23.3	29.4	79.2	19,955	9,194	3,697	2,122	673	430	1,420	1,949
Boston Celtics	62-20	1980-81	82	.756	241.2	109.9	43.6	26.9	8.3	7.2	19.2	43.7	86.6	50.4	0.8	2.9	27.0	21.7	28.9	75.2	19,780	9,008	3,579	2,202	683	594	1,577	1,990
Boston Celtics	60-20	1961-62	80	.750	240.9	121.1	76.0	25.6				48.2	113.9	42.3				24.7	33.9	72.8	19,275	9,687	6,080	2,049				1,909
Boston Celtics	61-21	1979-80	82	.744	242.4	113.5	44.9	26.8	9.9	3.8	18.8	44.1	90.1	49.0	2.0	5.1	38.4	23.3	29.9	77.9	19,880	9,303	3,684	2,198	809	308	1,539	1,974
Boston Celtics	60-21	1966-67	81	.741	242.2	119.3	70.4	24.2				46.0	102.8	44.7				27.4	36.6	74.8	19,615	9,664	5,703	1,962				2,138
Boston Celtics	59-21	1963-64	80	.738	240.9	113.0	71.7	22.0				45.2	109.6	41.3				22.6	31.1	72.5	19,275	9,042	5,736	1,760				2,125
Boston Celtics	60-22	1974-75	82	.732	240.9	106.5	52.0	26.3	8.1	3.5	19.8	43.7	95.4	45.8				19.0	24.0	79.1	19,755	8,734	4,264	2,159	662	288	1,625	1,913
Boston Celtics	58-22	1962-63	80	.725	240.9	118.8	72.7	24.5				46.8	109.7	42.7				25.2	34.7	72.5	19,275	9,504	5,818	1,960				2,090
Boston Celtics	52-20	1958-59	72	.722	242.8	116.4	77.8	21.8				44.6	112.7	39.5				27.3	35.6	76.6	17,480	8,379	5,601	1,568				1,769
Boston Celtics	57-22	1960-61	79	.722	241.3	119.7	77.6	23.7				46.8	117.7	39.8				26.1	35.6	73.3	19,060	9,460	6,131	1,872				2,032
Boston Celtics	59-23	1986-87	82	.720	241.5	112.6	42.9	29.5	6.8	6.4	15.9	44.5	86.0	51.7	2.5	6.9	36.6	21.2	26.3	80.8	19,805	9,237	3,518	2,421	561	526	1,300	1,710
Boston Celtics	57-25	2022-23	82	.695	243.7	117.9	45.3	26.7	6.4	5.2	13.4	42.2	88.8	47.5	16.0	42.6	37.7	17.5	21.6	81.2	19,980	9,671	3,717	2,186	521	430	1,095	1,542
Boston Celtics	57-25	1987-88	82	.695	241.2	113.6	41.1	29.9	7.6	5.1	15.9	43.9	84.2	52.1	3.3	8.6	38.4	22.5	28.0	80.3	19,780	9,315	3,370	2,448	620	415	1,304	1,804
Boston Celtics	56-26	2010-11	82	.683	241.2	96.5	38.8	23.4	8.2	4.2	14.6	36.9	75.8	48.6	5.0	13.6	36.5	17.8	23.1	77.0	19,780	7,913	3,181	1,921	676	344	1,195	1,678
Boston Celtics	56-26	1990-91	82	.683	241.5	111.5	46.2	26.3	8.2	6.9	16.1	45.1	88.0	51.2	1.3	4.2	31.5	20.1	24.4	82.4	19,805	9,145	3,785	2,160	672	565	1,320	1,695
Boston Celtics	56-26	1982-83	82	.683	241.8	112.1	46.4	27.0	9.6	6.4	18.8	45.3	92.0	49.2	0.5	2.3	21.0	21.1	28.6	73.7	19,830	9,191	3,805	2,216	789	521	1,541	2,062