Luka Doncic has the most career triple-doubles by a player younger than 22, with 32 triple-doubles.

most career triple double before turning 22

Interpreted as:

most career regular-season triple double before turning 22 years old by a player

NAME	TD3	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	+/-
Luka Doncic	32	164	33.2	25.4	8.5	7.6	1.0	0.4	3.9	8.5	18.8	45.2	2.6	7.8	32.7	5.9	7.9	74.2	5,453	4,168	1,395	1,245	171	61	636	354	+157
Magic Johnson	13	114	36.5	19.2	8.0	7.7				7.1	13.5	53.1	0.1	0.4	20.8	4.8	6.0	79.3	4,166	2,185	916	880				318
Ben Simmons	12	81	33.7	15.8	8.1	8.2	1.7	0.9	3.4	6.7	12.3	54.5	0.0	0.1	0.0	2.4	4.2	56.0	2,732	1,279	659	661	140	70	278	211	+387
Josh Giddey	11	210	28.9	13.9	7.3	5.7	0.8	0.5	2.6	5.8	12.5	46.4	1.0	3.3	31.0	1.2	1.7	75.3	6,079	2,920	1,534	1,200	159	95	550	342	-29
LaMelo Ball	9	162	31.8	19.4	6.4	7.3	1.5	0.4	3.2	7.0	16.3	42.6	2.8	7.5	37.7	2.7	3.3	82.8	5,158	3,149	1,034	1,188	246	59	519	491	-135
LeBron James	9	266	41.3	26.6	6.6	6.5	1.8	0.7	3.3	9.6	20.9	46.1	1.3	3.8	33.3	6.1	8.2	74.2	10,999	7,067	1,763	1,739	471	199	891	534	+393
Lamar Odom	7	155	36.9	16.8	7.9	4.6	1.1	1.4	3.5	6.1	13.7	44.6	0.9	2.8	32.6	3.7	5.3	69.9	5,719	2,605	1,217	720	170	222	536	539	-586
Oscar Robertson	7	20		26.6	9.8					9.2						8.2	9.8	83.2		531	195					55
Giannis Antetokounmpo	6	257	30.8	13.0	6.5	3.2	1.0	1.2	2.2	4.8	9.8	48.8	0.3	1.2	27.7	3.1	4.2	72.8	7,910	3,330	1,660	813	268	301	567	758	-259
Alvan Adams	5	80	33.2	19.0	9.1	5.6	1.5	1.4		7.9	16.8	46.9				3.3	4.4	73.5	2,656	1,519	727	450	121	115		274
Alperen Sengun	4	210	27.2	14.9	7.9	3.8	1.0	0.9	2.4	5.8	11.0	52.8	0.4	1.4	28.4	2.9	4.2	70.5	5,706	3,132	1,660	788	205	184	500	683	-543
Ja Morant	3	130	31.7	18.4	3.9	7.3	0.9	0.2	3.3	6.7	14.6	46.3	1.0	3.2	31.7	3.9	5.2	75.0	4,127	2,397	511	953	115	31	423	197	+91
Trae Young	3	141	32.8	23.6	3.9	8.6	1.0	0.2	4.2	7.6	17.8	42.8	2.6	7.4	34.4	5.8	6.9	84.7	4,623	3,327	556	1,213	137	23	597	244	-564
Lonzo Ball	3	102	32.3	10.1	6.1	6.4	1.6	0.6	2.4	3.9	10.4	38.1	1.7	5.4	31.8	0.5	1.2	44.8	3,296	1,034	627	651	162	62	242	238	-66
Chris Paul	3	142	36.3	16.6	4.8	8.3	2.1	0.1	2.4	5.5	12.8	43.3	0.7	2.3	31.3	4.8	5.8	83.5	5,161	2,362	680	1,180	293	9	344	372	-226
Antoine Walker	3	164	38.0	20.0	9.6	3.3	1.5	0.7	3.2	7.9	18.7	42.4	0.9	2.8	31.7	3.3	5.1	63.9	6,238	3,275	1,577	535	247	113	522	533	-826
Victor Wembanyama	2	71	29.7	21.4	10.6	3.9	1.2	3.6	3.7	7.8	16.7	46.5	1.8	5.5	32.5	4.1	5.2	79.6	2,106	1,522	755	274	88	254	260	153	-142
Paolo Banchero	2	152	34.4	21.3	6.9	4.6	0.9	0.6	2.9	7.4	16.6	44.2	1.3	4.2	32.1	5.3	7.2	73.1	5,228	3,241	1,051	700	131	86	447	313	-214
Cade Cunningham	2	76	32.7	17.8	5.6	5.6	1.2	0.7	3.6	6.9	16.5	41.6	1.7	5.6	30.9	2.3	2.8	84.4	2,488	1,353	428	428	88	50	273	234	-335
Markelle Fultz	2	97	25.7	10.6	3.4	4.6	1.2	0.2	1.8	4.4	9.7	45.6	0.4	1.4	25.6	1.4	2.1	66.8	2,493	1,027	326	446	112	19	173	200	-38
Dennis Smith Jr.	2	132	28.1	13.8	3.2	4.8	1.1	0.3	2.7	5.3	13.2	40.6	1.4	4.3	31.9	1.8	2.7	66.7	3,708	1,826	427	635	142	39	361	304	-543
Nikola Jokic	2	129	23.7	12.3	7.7	3.1	0.9	0.7	1.6	4.9	8.9	54.5	0.5	1.3	34.9	2.2	2.7	81.3	3,052	1,593	999	402	117	90	207	358	+263
Julius Randle	2	97	28.0	11.6	9.8	2.1	0.7	0.4	2.0	4.5	10.1	44.4	0.1	0.5	27.7	2.4	3.4	71.6	2,715	1,121	950	202	64	38	193	290	-719
Elfrid Payton	2	132	30.1	9.7	4.0	6.2	1.6	0.3	2.4	3.9	9.3	42.5	0.3	0.8	31.7	1.5	2.6	57.8	3,974	1,275	527	819	206	33	322	308	-291
Russell Westbrook	2	171	33.6	16.0	4.9	6.7	1.4	0.3	3.3	5.7	13.9	41.0	0.3	1.4	24.1	4.3	5.3	80.5	5,748	2,736	844	1,142	233	54	570	417	-6