Kareem Abdul-Jabbar, Tim Duncan and LeBron James are tied for the oldest All-NBA players in a season. They were 38 years old.

oldest players to make all nba first team

Interpreted as:

oldest players to make all NBA in a regular season first team

NAME	AGE	ALLNBA	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	+/-
Kareem Abdul-Jabbar	38	1	1985-86	LAL	79	33.3	23.4	6.1	3.5	0.8	1.6	2.6	9.6	16.9	56.4	0.0	0.0	0.0	4.3	5.6	76.5	2,629	1,846	478	280	67	130	203	248
Tim Duncan	38	1	2014-15	SAS	77	28.9	13.9	9.1	3.0	0.8	2.0	1.7	5.4	10.6	51.2	0.0	0.1	28.6	3.0	4.0	74.0	2,227	1,070	704	230	63	151	131	165	+305
LeBron James	38	1	2022-23	LAL	55	35.5	28.9	8.3	6.8	0.9	0.6	3.2	11.1	22.2	50.0	2.2	6.9	32.1	4.6	5.9	76.8	1,954	1,590	457	375	50	32	178	88	+214
Kareem Abdul-Jabbar	37	1	1984-85	LAL	79	33.3	22.0	7.9	3.2	0.8	2.1	2.5	9.2	15.3	59.9	0.0	0.0	0.0	3.7	5.0	73.2	2,630	1,735	622	249	63	162	197	238
Karl Malone	37	1	2000-01	UTA	81	35.7	23.2	8.3	4.5	1.1	0.8	3.0	8.3	16.6	49.8	0.0	0.1	40.0	6.6	8.3	79.3	2,895	1,878	669	361	93	62	244	216	+381
LeBron James	37	1	2021-22	LAL	56	37.2	30.3	8.2	6.2	1.3	1.1	3.5	11.4	21.8	52.4	2.9	8.0	35.9	4.5	6.0	75.6	2,084	1,695	459	349	73	59	196	121	-117
Kareem Abdul-Jabbar	36	1	1983-84	LAL	80	32.8	21.5	7.3	2.6	0.7	1.8	2.8	9.0	15.5	57.8	0.0	0.0	0.0	3.6	4.9	72.3	2,622	1,717	587	211	55	143	221	211
Hakeem Olajuwon	36	1	1998-99	HOU	50	35.7	18.9	9.6	1.8	1.6	2.5	2.8	7.5	14.5	51.4	0.1	0.3	30.8	3.9	5.4	71.7	1,784	945	478	88	82	123	139	160	+61
John Stockton	36	1	1998-99	UTA	50	28.2	11.1	2.9	7.5	1.6	0.3	2.2	4.0	8.2	48.8	0.3	1.0	32.0	2.7	3.4	81.1	1,410	553	146	374	81	13	110	107	+304
Karl Malone	36	1	1999-00	UTA	82	35.9	25.5	9.5	3.7	1.0	0.9	2.8	9.2	18.0	50.9	0.0	0.1	25.0	7.2	9.0	79.7	2,947	2,095	779	304	79	71	231	229	+481
Shaquille O'Neal	36	1	2008-09	PHX	75	30.0	17.8	8.4	1.7	0.7	1.4	2.2	6.8	11.2	60.9	0.0	0.0	0.0	4.1	6.9	59.5	2,252	1,333	633	126	49	108	168	253	+140
Tim Duncan	36	1	2012-13	SAS	69	30.1	17.8	9.9	2.7	0.7	2.7	2.1	7.1	14.1	50.2	0.0	0.1	28.6	3.6	4.3	81.7	2,078	1,227	686	184	50	183	147	117	+459
LeBron James	36	1	2020-21	LAL	45	33.4	25.0	7.7	7.8	1.1	0.6	3.7	9.4	18.3	51.3	2.3	6.3	36.5	4.0	5.7	69.8	1,504	1,126	346	350	48	25	168	70	+287
Chris Paul	36	1	2021-22	PHX	65	32.9	14.7	4.4	10.8	1.9	0.3	2.4	5.6	11.3	49.3	1.0	3.1	31.7	2.6	3.1	83.7	2,139	958	283	702	121	20	153	134	+460
Wilt Chamberlain	35	1	1971-72	LAL	82	42.3	14.8	19.2	4.0				6.0	9.3	64.9				2.7	6.4	42.2	3,469	1,213	1,572	329				196
John Havlicek	35	1	1975-76	BOS	76	34.2	17.0	4.1	3.7	1.3	0.4		6.6	14.8	45.0				3.7	4.4	84.4	2,598	1,289	314	278	97	29		204
Kareem Abdul-Jabbar	35	1	1982-83	LAL	79	32.3	21.8	7.5	2.5	0.8	2.2	2.5	9.1	15.5	58.8	0.0	0.0	0.0	3.5	4.7	74.9	2,554	1,722	592	200	61	170	200	220
Robert Parish	35	1	1988-89	BOS	80	35.5	18.6	12.5	2.2	1.0	1.5	2.5	7.5	13.1	57.0	0.0	0.0		3.7	5.1	71.9	2,840	1,486	996	175	79	116	200	209
Karl Malone	35	1	1998-99	UTA	49	37.4	23.8	9.4	4.1	1.3	0.6	3.3	8.0	16.3	49.3	0.0	0.0	0.0	7.7	9.8	78.8	1,832	1,164	463	201	62	28	162	134	+355
David Robinson	35	1	2000-01	SAS	80	29.6	14.4	8.6	1.5	1.0	2.5	1.5	5.0	10.3	48.6	0.0	0.0	0.0	4.4	5.9	74.7	2,371	1,151	691	116	80	197	122	212	+562
Dikembe Mutombo	35	1	2001-02	PHI	80	36.3	11.5	10.8	1.0	0.4	2.4	2.0	4.0	8.0	50.1	0.0	0.0		3.5	4.6	76.4	2,907	920	863	83	29	190	156	242	+281
Steve Nash	35	1	2009-10	PHX	81	32.8	16.5	3.3	11.0	0.5	0.1	3.6	6.2	12.2	50.7	1.5	3.6	42.6	2.6	2.8	93.8	2,660	1,333	268	892	42	12	295	108	+379
LeBron James	35	1	2019-20	LAL	67	34.6	25.3	7.8	10.2	1.2	0.5	3.9	9.6	19.4	49.3	2.2	6.3	34.8	3.9	5.7	69.3	2,316	1,698	525	684	78	36	261	118	+441
Chris Paul	35	1	2020-21	PHX	70	31.4	16.4	4.5	8.9	1.4	0.3	2.2	6.3	12.6	49.9	1.5	3.7	39.5	2.4	2.6	93.4	2,199	1,149	312	622	99	19	156	166	+310
Bob Cousy	34	1	1962-63	BOS	76	26.0	13.2	2.5	6.8				5.2	13.0	39.7				2.9	3.9	73.5	1,975	1,003	193	515				175