Steve Nash has the most assists by a 35-year-old player in a game, with 21 assists versus the Pistons on February 8, 2009.

Interpreted as:

highest assist regular-season game by a 35 years old by a player

	NAME	AST	AGE	DATE	TM		OPP	MIN	PTS	REB	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Steve Nash S. Nash	21	35-001	2/8/2009	PHX	@	DET	34	15	3	1	0	5	12	41.7	1	2	50.0	4	5	80.0	52.8	2	1	2	2	+9
2	Steve Nash S. Nash	20	35-275	11/9/2009	PHX	@	PHI	36	21	2	0	1	6	9	66.7	1	3	33.3	8	8	100.0	83.9	0	2	7	0	+19
3	Steve Nash S. Nash	20	35-265	10/30/2009	PHX	vs	GSW	37	18	6	0	1	7	17	41.2	3	6	50.0	1	1	100.0	51.6	1	5	3	0	+21
4	Bob Davies B. Davies	20	35-007	1/22/1955	ROC	vs	BOS		25				4	15	26.7				17	21	81.0	51.6				3
5	Chris Paul C. Paul	19	35-289	2/19/2021	PHX	@	NOP	31	15	4	2	1	6	11	54.5	3	5	60.0	0	0		68.2	0	4	2	1	+20
6	LeBron James L. James	19	35-016	1/15/2020	LAL	vs	ORL	36	19	3	1	0	7	19	36.8	2	9	22.2	3	5	60.0	44.8	0	3	5	1	-9
7	Gail Goodrich G. Goodrich	19	35-195	11/4/1978	NOJ	@	MIL	48	25	2	3	0	10	16	62.5				5	5	100.0	68.7				1
8	Steve Nash S. Nash	18	35-307	12/11/2009	PHX	vs	ORL	40	20	7	0	0	6	13	46.2	2	4	50.0	6	7	85.7	62.2	1	6	3	1	+6
9	John Stockton J. Stockton	18	35-315	2/4/1998	UTA	vs	CHI	37	17	3	5	0	6	12	50.0	1	2	50.0	4	4	100.0	61.8	0	3	3	1	+19
10	Lenny Wilkens L. Wilkens	18	35-151	3/28/1973	CLE	vs	DET	45	24	5			8	16	50.0				8	8	100.0	61.5				4
11	James Harden J. Harden	17	35-197	3/11/2025	LAC	@	NOP	40	25	4	2	0	6	15	40.0	4	11	36.4	9	9	100.0	65.9	0	4	6	3	+5
12	James Harden J. Harden	17	35-166	2/8/2025	LAC	vs	UTA	38	23	2	2	0	7	18	38.9	2	8	25.0	7	8	87.5	53.4	0	2	5	1	+30
13	Steve Nash S. Nash	17	35-274	11/8/2009	PHX	@	WAS	35	11	3	0	1	4	9	44.4	1	4	25.0	2	2	100.0	55.7	0	3	3	2	+11
14	Steve Nash S. Nash	17	35-053	4/1/2009	PHX	vs	HOU	39	25	1	3	0	9	15	60.0	2	2	100.0	5	8	62.5	67.5	1	0	1	1	+18
15	Jason Kidd J. Kidd	17	35-010	4/2/2008	DAL	vs	GSW	33	5	11	4	0	1	6	16.7	0	1	0.0	3	4	75.0	32.2	3	8	5	1	+12
16	Mark Jackson M. Jackson	17	35-271	12/28/2000	TOR	@	DEN	39	11	4	2	0	4	11	36.4	1	3	33.3	2	2	100.0	46.3	2	2	1	2	+5
17	Oscar Robertson O. Robertson	17	35-099	3/3/1974	MIL		HOU	50	13	7	0	0	4	7	57.1				5	7	71.4	64.5				2
18	James Harden J. Harden	16	35-084	11/18/2024	LAC	vs	GSW	41	12	6	2	2	4	15	26.7	2	6	33.3	2	2	100.0	37.8	0	6	3	2	-4
19	James Harden J. Harden	16	35-061	10/26/2024	LAC	@	DEN	38	23	6	1	1	5	11	45.5	1	5	20.0	12	13	92.3	68.8	0	6	7	5	+3
20	Kevin Durant K. Durant	16	35-089	12/27/2023	PHX	@	HOU	41	27	10	2	1	9	16	56.3	3	7	42.9	6	8	75.0	69.2	0	10	3	2	+17
21	Chris Paul C. Paul	16	35-363	5/4/2021	PHX	@	CLE	36	23	6	4	2	8	16	50.0	2	3	66.7	5	5	100.0	63.2	0	6	0	4	+20
22	Steve Nash S. Nash	16	35-358	1/31/2010	PHX	@	HOU	41	11	8	0	0	2	10	20.0	1	6	16.7	6	6	100.0	43.5	1	7	0	1	+7
23	Steve Nash S. Nash	16	35-295	11/29/2009	PHX	@	TOR	34	20	3	1	0	8	15	53.3	2	4	50.0	2	2	100.0	63.0	0	3	3	2	+14
24	Steve Nash S. Nash	16	35-291	11/25/2009	PHX	vs	MEM	30	11	3	1	0	5	8	62.5	1	1	100.0	0	0		68.8	0	3	3	0	+26
25	Steve Nash S. Nash	16	35-283	11/17/2009	PHX	@	HOU	37	12	3	0	0	2	10	20.0	0	1	0.0	8	9	88.9	43.0	0	3	3	1	+6