Marcus Smart has hit the most threes for the Celtics in a game, with 11 three-pointers versus the Suns on January 18, 2020.

Interpreted as:

celtics player record for 3s in a regular-season game

NAME	3PM	DATE	TM		OPP	MIN	PTS	REB	AST	STL	BLK	TOV	FGM	FGA	FG%	3PA	3P%	FTM	FTA	FT%	PF	+/-
Marcus Smart	11	1/18/2020	BOS	vs	PHX	33	37	5	8	4	0	1	13	25	52.0	22	50.0	0	0		4	-11
Sam Hauser	10	3/17/2024	BOS	@	WAS	23	30	6	1	1	0	0	10	13	76.9	13	76.9	0	0		1	+18
Jaylen Brown	10	3/21/2021	BOS	vs	ORL	33	34	4	3	1	0	0	12	24	50.0	19	52.6	0	0		4	+23
Payton Pritchard	9	4/9/2023	BOS	vs	ATL	46	30	14	11	0	0	7	10	21	47.6	16	56.3	1	1	100.0	1	+11
Jayson Tatum	9	1/23/2022	BOS	@	WAS	33	51	10	7	0	0	1	18	28	64.3	14	64.3	6	6	100.0	1	+31
Isaiah Thomas	9	12/30/2016	BOS	vs	MIA	37	52	2	0	1	0	2	15	26	57.7	13	69.2	13	13	100.0	2	+10
Antoine Walker	9	11/9/2002	BOS	@	MIN	46	31	8	3	2	1	2	11	24	45.8	13	69.2	0	0		5	+4
Antoine Walker	9	1/17/2001	BOS	@	SAC	45	47	5	13	4	1	5	16	29	55.2	14	64.3	6	10	60.0	3	-5
Jayson Tatum	8	1/6/2024	BOS	@	IND	38	38	13	6	1	0	4	14	23	60.9	13	61.5	2	4	50.0	4	+19
Jaylen Brown	8	10/30/2023	BOS	@	WAS	32	36	6	2	3	1	0	13	24	54.2	13	61.5	2	4	50.0	3	+32
Sam Hauser	8	4/9/2023	BOS	vs	ATL	38	26	5	6	1	1	1	9	16	56.3	14	57.1	0	0		2	+6
Jayson Tatum	8	3/30/2023	BOS	@	MIL	31	40	8	1	0	0	0	12	18	66.7	10	80.0	8	8	100.0	1	+36
Derrick White	8	2/10/2023	BOS	vs	CHA	37	33	3	10	1	3	1	12	19	63.2	14	57.1	1	1	100.0	2	+21
Jayson Tatum	8	11/30/2022	BOS	vs	MIA	39	49	11	3	2	0	1	15	25	60.0	12	66.7	11	12	91.7	3	+29
Jayson Tatum	8	3/6/2022	BOS	vs	BKN	41	54	5	3	0	0	2	16	30	53.3	15	53.3	14	17	82.4	4	+12
Jaylen Brown	8	10/20/2021	BOS	@	NYK	46	46	9	6	3	1	4	16	30	53.3	14	57.1	6	8	75.0	5	+16
Jayson Tatum	8	2/25/2020	BOS	@	POR	34	36	4	1	0	2	2	14	22	63.6	12	66.7	0	0		1	+22
Kemba Walker	8	11/11/2019	BOS	vs	DAL	33	29	5	5	0	1	3	9	17	52.9	14	57.1	3	4	75.0	1	+18
Terry Rozier	8	3/25/2018	BOS	@	SAC	36	33	5	3	5	0	1	12	16	75.0	12	66.7	1	1	100.0	1	+18
Avery Bradley	8	10/29/2016	BOS	@	CHA	36	31	11	4	1	0	1	11	19	57.9	11	72.7	1	2	50.0	4	+11
Jeff Green	8	1/22/2014	BOS	@	WAS	46	39	9	1	3	1	1	14	26	53.8	16	50.0	3	5	60.0	2	+10
Eddie House	8	1/28/2009	BOS	vs	SAC	20	28	3	0	1	0	0	10	13	76.9	9	88.9	0	0		0	+29
Ray Allen	8	1/11/2009	BOS	@	TOR	43	36	3	2	2	0	1	11	14	78.6	10	80.0	6	6	100.0	5	+12
Antoine Walker	8	12/13/2002	BOS	vs	CLE	47	33	11	10	3	0	7	12	21	57.1	13	61.5	1	5	20.0	2	+15
Paul Pierce	8	11/9/2001	BOS	vs	SEA	41	35	8	3	1	1	2	13	26	50.0	12	66.7	1	3	33.3	3	+18