LeBron James has the most career assists by a player younger than 21, with 1,193 assists.

Interpreted as:

most assists before turning 21 years old by a player

	NAME	AST	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	STL	BLK	TOV	PF	+/-
1	LeBron James L. James	1,193	186	41.0	25.0	6.4	6.4	1.9	0.7	9.1	20.1	45.4	1.1	3.5	33.0	5.6	7.4	75.5	53.4	1.2	5.2	3.4	7,629	4,649	1,187	352	135	626	361	+165
2	Stephon Marbury S. Marbury	939	118	36.3	17.2	2.7	8.0	1.2	0.2	5.9	14.2	41.5	1.4	4.1	33.5	4.0	5.6	71.5	51.5	0.7	2.0	3.2	4,286	2,028	322	141	23	375	301	-75
3	LaMelo Ball L. Ball	884	126	30.9	18.3	6.4	7.0	1.6	0.4	6.6	15.3	43.1	2.5	6.6	37.8	2.7	3.2	82.6	54.9	1.4	5.0	3.1	3,890	2,311	803	200	48	390	373	+15
4	Luka Dončić L. Dončić	839	119	32.4	24.2	8.5	7.1	1.1	0.3	8.0	18.0	44.3	2.6	7.9	32.5	5.6	7.6	73.6	56.5	1.3	7.2	3.7	3,857	2,876	1,012	126	34	446	253	+142
5	Josh Giddey J. Giddey	814	130	31.3	14.9	7.8	6.3	0.8	0.4	6.3	13.8	45.9	1.0	3.4	29.5	1.2	1.7	72.3	51.3	1.9	6.0	2.9	4,067	1,934	1,020	108	51	382	231	-404
6	Jrue Holiday J. Holiday	811	155	30.1	11.2	3.4	5.2	1.3	0.3	4.4	9.8	44.5	0.9	2.5	37.5	1.5	1.9	80.3	52.5	0.8	2.6	2.4	4,667	1,732	523	199	47	374	356	+14
7	Tony Parker T. Parker	766	159	31.7	12.4	2.6	4.8	1.0	0.1	4.7	10.6	44.7	0.9	2.7	33.1	2.1	2.8	72.7	52.5	0.4	2.2	2.2	5,041	1,974	413	160	11	349	340	+627
8	Trae Young T. Young	653	81	30.9	19.1	3.7	8.1	0.9	0.2	6.5	15.5	41.8	1.9	6.0	32.4	4.2	5.1	82.9	53.9	0.8	2.9	3.8	2,503	1,549	301	72	15	308	140	-336
9	Chris Paul C. Paul	611	78	36.0	16.1	5.1	7.8	2.2	0.1	5.2	12.1	43.0	0.6	2.3	28.2	5.1	6.0	84.7	54.6	0.8	4.3	2.3	2,808	1,258	400	175	6	183	218	-181
10	John Wall J. Wall	574	69	37.8	16.4	4.6	8.3	1.8	0.5	5.8	14.1	40.9	0.5	1.7	29.6	4.4	5.7	76.6	49.4	0.5	4.1	3.8	2,606	1,131	317	121	35	261	175	-440
11	Emmanuel Mudiay E. Mudiay	559	114	29.2	12.3	3.4	4.9	0.9	0.4	4.5	12.3	36.6	1.1	3.5	31.4	2.2	3.1	71.4	45.0	0.5	2.9	2.9	3,328	1,400	390	103	47	328	224	-264
12	Scoot Henderson S. Henderson	558	104	27.8	13.4	3.1	5.4	0.9	0.2	4.7	11.7	40.1	1.4	4.2	33.8	2.6	3.3	80.2	51.1	0.8	2.3	3.1	2,887	1,396	321	96	25	324	308	-617
13	Kyrie Irving K. Irving	552	100	32.8	20.7	3.7	5.5	1.3	0.4	7.7	16.4	46.7	1.7	4.1	40.7	3.7	4.4	85.6	56.5	0.7	3.0	3.2	3,279	2,071	373	133	37	315	238	-274
14	De'Aaron Fox D. Fox	550	104	28.9	13.5	3.0	5.3	1.1	0.4	5.1	11.7	43.5	0.8	2.4	34.3	2.6	3.5	72.3	51.2	0.5	2.5	2.6	3,009	1,408	313	117	38	271	236	-366
15	Derrick Rose D. Rose	512	81	37.0	16.8	3.9	6.3	0.8	0.2	7.1	14.9	47.5	0.2	0.9	22.2	2.4	3.1	78.8	51.6	1.2	2.7	2.5	3,000	1,361	317	66	18	202	125	-121
16	Devin Booker D. Booker	494	160	31.5	18.1	3.0	3.1	0.8	0.3	6.4	15.0	42.4	1.6	4.5	35.5	3.8	4.5	83.5	53.3	0.5	2.5	2.6	5,033	2,897	473	122	43	419	481	-642
17	Russell Westbrook R. Westbrook	493	90	32.6	15.3	4.9	5.5	1.3	0.2	5.3	13.4	40.0	0.4	1.6	27.6	4.2	5.1	81.1	48.9	2.1	2.7	3.4	2,938	1,376	438	118	19	308	217	-240
18	Anthony Edwards A. Edwards	486	144	33.2	20.3	4.7	3.4	1.3	0.6	7.3	17.1	42.9	2.7	7.8	34.4	3.0	3.8	78.1	54.2	0.8	3.9	2.4	4,780	2,925	679	187	82	350	293	-40
19	Kobe Bryant K. Bryant	480	200	25.3	13.8	3.2	2.4	1.0	0.6	4.6	10.6	43.9	0.8	2.3	33.5	3.7	4.6	81.3	54.7	0.9	2.3	2.1	5,055	2,755	638	195	113	426	435	+416
20	Zach LaVine Z. LaVine	478	142	25.4	11.7	2.9	3.4	0.7	0.1	4.4	10.1	43.5	1.0	2.7	35.2	2.0	2.4	81.9	52.5	0.4	2.5	2.2	3,612	1,659	411	103	21	318	318	-802
21	Alperen Sengun A. Sengun	476	147	24.9	12.3	7.3	3.2	0.9	0.9	4.7	9.0	52.2	0.3	1.2	27.6	2.5	3.5	71.3	58.0	2.6	4.7	2.3	3,660	1,801	1,071	129	138	338	472	-592
22	Tracy McGrady T. McGrady	474	192	24.7	11.1	5.5	2.5	1.0	1.4	4.2	9.4	44.8	0.2	0.7	28.4	2.4	3.4	71.2	50.7	2.2	3.3	1.6	4,747	2,122	1,048	191	278	306	381	-262
23	Sebastian Telfair S. Telfair	471	136	21.8	8.1	1.6	3.5	0.7	0.1	2.9	7.4	39.4	0.5	1.7	32.0	1.7	2.3	76.3	48.2	0.2	1.4	1.8	2,971	1,103	224	101	10	240	287	-516
24	Brandon Jennings B. Jennings	470	82	32.6	15.5	3.4	5.7	1.3	0.2	5.5	14.8	37.1	1.8	4.7	37.4	2.7	3.3	81.7	47.5	0.6	2.8	2.4	2,671	1,270	282	105	18	200	191	+116
25	Ja Morant J. Morant	465	65	30.7	17.8	3.7	7.2	0.9	0.2	6.7	14.0	48.0	0.9	2.6	34.5	3.5	4.5	77.7	55.8	0.7	3.0	3.2	1,998	1,155	242	57	16	211	106	-24