Allen Iverson and John Havlicek are tied for the most points in an Eastern Conference Semifinals game, with 54 points.

most points in a eastern conference semi finals game by a player

NAME	PTS	DATE	SEASON	SERIES	TM		OPP	MIN	REB	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
Allen Iverson	54	5/9/2001	2000-01	Conference Semifinals	PHI	vs	TOR	47	5	4	1	0	21	39	53.8	3	5	60.0	9	9	100.0	62.8	1	4	4	3	+8
John Havlicek	54	4/1/1973	1972-73	Conference Semifinals	BOS	vs	ATL	48	9	6			24	36	66.7				6	6	100.0	69.9				2
Isaiah Thomas	53	5/2/2017	2016-17	Conference Semifinals	BOS	vs	WAS	45	4	4	3	0	18	33	54.5	5	12	41.7	12	13	92.3	68.4	1	3	2	2	+10
Allen Iverson	52	5/16/2001	2000-01	Conference Semifinals	PHI	vs	TOR	43	2	7	4	0	21	32	65.6	8	14	57.1	2	2	100.0	79.1	0	2	1	3	+30
Jayson Tatum	51	5/14/2023	2022-23	Conference Semifinals	BOS	vs	PHI	42	13	5	2	0	17	28	60.7	6	10	60.0	11	14	78.6	74.6	0	13	0	1	+33
Vince Carter	50	5/11/2001	2000-01	Conference Semifinals	TOR	vs	PHI	45	6	7	1	4	19	29	65.5	9	13	69.2	3	3	100.0	82.5	3	3	1	3	+24
Bob McAdoo	50	4/18/1975	1974-75	Conference Semifinals	BUF	vs	WAS	45	21	1			20	32	62.5				10	14	71.4	65.5				4
Kevin Durant	49	6/15/2021	2020-21	Conference Semifinals	BKN	vs	MIL	48	17	10	3	2	16	23	69.6	4	9	44.4	13	16	81.3	81.6	0	17	3	3	+6
LeBron James	49	5/12/2014	2013-14	Conference Semifinals	MIA	@	BKN	43	6	2	3	0	16	24	66.7	3	6	50.0	14	19	73.7	75.7	0	6	1	5	+13
Michael Jordan	49	5/11/1990	1989-90	Conference Semifinals	CHI	@	PHI	42	5	5	4	1	19	34	55.9	4	11	36.4	7	9	77.8	64.5	2	3	5	4
Kevin Durant	48	6/19/2021	2020-21	Conference Semifinals	BKN	vs	MIL	53	9	6	1	1	17	36	47.2	4	11	36.4	10	11	90.9	58.8	1	8	3	4	-4
LeBron James	47	5/9/2009	2008-09	Conference Semifinals	CLE	@	ATL	43	12	8	1	1	15	25	60.0	5	10	50.0	12	16	75.0	73.3	2	10	1	2	+26
Michael Jordan	47	5/14/1989	1988-89	Conference Semifinals	CHI	vs	NYK	42	11	6	1	2	12	18	66.7	0	1	0.0	23	28	82.1	77.5	0	11	6	3
Dominique Wilkins	47	5/22/1988	1987-88	Conference Semifinals	ATL	@	BOS	43	5	3	0	0	19	33	57.6	1	2	50.0	8	9	88.9	63.6	2	3	0	0
Jayson Tatum	46	5/13/2022	2021-22	Conference Semifinals	BOS	@	MIL	43	9	4	0	1	17	32	53.1	7	15	46.7	5	7	71.4	65.6	0	9	4	2	+21
Michael Jordan	46	5/11/1996	1995-96	Conference Semifinals	CHI	@	NYK	51	4	2	2	0	17	35	48.6	2	5	40.0	10	13	76.9	56.5	3	1	4	2
Michael Jordan	46	5/10/1991	1990-91	Conference Semifinals	CHI	@	PHI	42	4	6	1	4	20	34	58.8	0	0		6	9	66.7	60.6	0	4	2	3
George Gervin	46	4/18/1978	1977-78	Conference Semifinals	SAS	vs	WAS	41	6	3	1	1	17	32	53.1				12	15	80.0	59.6			4	3
Elvin Hayes	46	4/20/1975	1974-75	Conference Semifinals	WAS	vs	BUF	48	12	5	3	3	19	26	73.1				8	13	61.5	72.5				3
James Harden	45	5/1/2023	2022-23	Conference Semifinals	PHI	@	BOS	39	1	6	2	0	17	30	56.7	7	14	50.0	4	4	100.0	70.8	0	1	3	4	+8
Kawhi Leonard	45	4/27/2019	2018-19	Conference Semifinals	TOR	vs	PHI	38	11	2	2	1	16	23	69.6	3	7	42.9	10	11	90.9	80.8	0	11	2	1	+26
LeBron James	45	5/18/2008	2007-08	Conference Semifinals	CLE	@	BOS	47	5	6	2	0	14	29	48.3	3	11	27.3	14	19	73.7	60.2	1	4	2	4	0
Michael Jordan	45	5/13/1990	1989-90	Conference Semifinals	CHI	@	PHI	42	6	11	2	2	16	31	51.6	1	2	50.0	12	13	92.3	61.3	1	5	3	3
Patrick Ewing	45	5/12/1990	1989-90	Conference Semifinals	NYK	vs	DET	45	13	6	0	3	14	24	58.3	0	0		17	18	94.4	70.5	3	10	1	4
Michael Jordan	45	5/9/1990	1989-90	Conference Semifinals	CHI	vs	PHI	43	8	7	3	0	18	36	50.0	1	3	33.3	8	8	100.0	56.9	4	4	2	3