John Stockton has the most games with 15+ assists in a season, with 44 games in 1987-88.

Interpreted as:

NBA most 15+ assist games by a player in a season

	NAME	GP	AST	SEASON	TM	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	John Stockton J. Stockton	44	765	1987-88	UTA	38.6	16.4	3.4	17.4	3.2	0.3	6.1	10.4	59.1	0.4	0.9	42.1	3.7	4.5	83.7	66.3	0.8	2.6	3.6	1,698	720	150	141	11	157	138
2	John Stockton J. Stockton	42	716	1990-91	UTA	38.5	17.2	3.3	17.0	2.7	0.3	5.9	11.5	50.9	0.7	2.0	35.3	4.7	5.6	85.0	61.5	0.7	2.6	3.2	1,617	723	139	113	11	135	116
3	John Stockton J. Stockton	42	745	1989-90	UTA	39.1	17.6	3.0	17.7	3.0	0.2	6.3	11.9	53.1	0.7	1.4	49.2	4.2	5.5	77.7	61.4	0.8	2.2	3.5	1,643	739	126	125	10	145	131
4	Isiah Thomas I. Thomas	37	648	1984-85	DET	38.6	20.2	4.4	17.5	2.3	0.2	7.8	16.2	48.3	0.3	1.4	20.8	4.3	5.4	80.4	54.6	1.2	3.1	3.9	1,429	749	161	85	8	146	125
5	John Stockton J. Stockton	34	580	1988-89	UTA	39.4	17.2	3.2	17.1	3.6	0.2	6.1	11.3	54.3	0.3	0.9	34.5	4.6	5.3	87.3	63.1	0.9	2.3	3.5	1,339	584	109	121	7	118	96
6	John Stockton J. Stockton	31	536	1991-92	UTA	38.1	17.1	3.1	17.3	3.0	0.3	5.9	11.9	49.3	1.1	2.6	41.5	4.3	4.9	87.5	60.9	0.9	2.2	3.5	1,181	531	95	94	9	110	83
7	Magic Johnson M. Johnson	25	423	1986-87	LAL	36.3	22.1	6.6	16.9	2.0	0.6	8.0	14.2	56.1	0.1	0.5	23.1	6.1	6.9	87.9	64.1	1.4	5.2	4.0	908	553	165	50	15	99	45
8	Kevin Johnson K. Johnson	24	395	1988-89	PHX	40.4	19.4	4.5	16.5	2.1	0.2	6.5	13.1	49.2	0.0	0.1	0.0	6.5	7.1	90.6	59.6	0.6	3.9	3.8	969	465	108	51	5	91	62
9	Magic Johnson M. Johnson	24	414	1988-89	LAL	38.3	21.1	8.8	17.3	1.7	0.2	7.2	13.8	52.4	0.9	2.5	35.0	5.8	6.7	86.9	63.2	1.3	7.5	3.8	918	506	212	40	4	91	52
10	Magic Johnson M. Johnson	23	377	1990-91	LAL	40.2	18.6	7.0	16.4	1.6	0.2	5.9	12.8	46.3	1.2	3.7	32.1	5.6	6.1	92.1	60.2	1.4	5.6	4.6	924	428	161	36	5	105	43
11	John Stockton J. Stockton	22	358	1994-95	UTA	36.3	14.3	3.2	16.3	2.2	0.3	5.1	9.4	54.1	1.2	2.8	44.3	2.9	3.5	83.1	65.4	0.7	2.5	3.0	799	315	71	49	6	66	62
12	John Stockton J. Stockton	22	365	1993-94	UTA	37.8	13.9	3.1	16.6	2.3	0.2	5.5	10.4	52.8	0.5	1.7	27.0	2.5	3.3	74.0	58.6	0.7	2.4	3.3	832	306	68	51	5	73	71
13	Magic Johnson M. Johnson	22	378	1985-86	LAL	36.6	18.3	6.5	17.2	1.7	0.4	6.6	12.7	52.3	0.1	0.4	22.2	5.0	5.7	86.5	60.2	1.4	5.2	3.4	805	403	144	37	8	74	38
14	Magic Johnson M. Johnson	22	372	1984-85	LAL	40.1	18.0	7.0	16.9	1.6	0.5	6.3	12.0	52.1	0.0	0.4	12.5	5.4	6.4	84.3	60.5	1.2	5.8	3.8	883	395	155	36	10	84	47
15	Magic Johnson M. Johnson	22	376	1983-84	LAL	37.6	16.9	8.1	17.1	2.3	0.6	6.0	10.8	55.9	0.0	0.5	0.0	4.8	5.9	81.4	62.9	1.4	6.7	4.0	828	371	178	50	13	87	49
16	Mark Jackson M. Jackson	21	354	1996-97	TOT	42.1	11.2	6.1	16.9	1.0	0.2	3.9	9.4	41.6	0.8	2.6	31.5	2.6	3.0	84.4	52.2	1.0	5.1	3.5	884	235	129	22	5	73	54	+89
17	Steve Nash S. Nash	20	324	2010-11	PHX	37.1	16.2	4.1	16.2	0.7	0.0	5.7	11.8	48.5	1.0	3.0	33.9	3.8	4.0	93.8	59.8	0.6	3.5	3.3	741	323	81	13	0	66	19	+95
18	Rajon Rondo R. Rondo	19	317	2015-16	SAC	38.8	12.3	7.1	16.7	2.4	0.1	5.2	11.6	45.0	0.8	2.3	34.1	1.1	2.1	51.3	49.1	1.4	5.6	4.0	737	233	134	45	2	76	43	+2
19	Chris Paul C. Paul	19	318	2007-08	NOH	37.8	20.5	4.2	16.7	2.6	0.1	7.1	15.3	46.4	1.0	2.7	37.3	5.3	6.1	87.1	57.0	0.7	3.4	2.2	718	390	79	50	2	42	45	+262
20	Magic Johnson M. Johnson	18	309	1989-90	LAL	40.0	20.9	6.3	17.2	2.0	0.4	6.0	13.0	46.2	1.5	3.6	42.2	7.4	8.2	89.9	62.9	1.0	5.3	3.9	720	376	113	36	7	70	40
21	Kevin Johnson K. Johnson	18	298	1989-90	PHX	39.6	20.4	4.4	16.6	1.4	0.2	7.3	14.5	50.6	0.0	0.4	0.0	5.8	7.7	75.4	57.2	0.7	3.7	3.6	712	368	79	26	4	64	39
22	Trae Young T. Young	17	290	2024-25	ATL	37.5	21.9	3.1	17.1	1.3	0.1	6.6	18.1	36.7	2.6	8.4	31.5	5.9	6.6	90.2	52.1	0.4	2.6	4.0	638	372	52	22	2	68	34	+44
23	Steve Nash S. Nash	16	262	2006-07	PHX	35.5	15.6	4.5	16.4	0.7	0.1	5.6	11.3	49.7	1.6	3.8	41.7	2.8	2.9	95.7	61.9	0.6	3.9	3.2	567	249	72	11	1	51	23	+225
24	Andre Miller A. Miller	16	264	2001-02	CLE	40.9	16.8	5.3	16.5	2.3	0.3	6.2	13.1	47.1	0.2	1.1	17.6	4.2	5.3	79.8	54.3	1.5	3.8	3.1	655	268	85	37	5	50	43	+37
25	Isiah Thomas I. Thomas	16	259	1983-84	DET	38.4	20.9	4.0	16.2	2.8	0.4	8.1	17.3	47.1	0.1	0.7	18.2	4.6	6.4	71.6	52.2	1.8	2.3	2.7	615	335	64	45	6	43	63