I didn't find anything for this season, but Jimmy Butler played the most minutes in the 2023 playoffs, with 874 minutes on the court.

nba players with most total minutes played this playoff

NAME	MIN	GP	PTS	REB	AST	STL	BLK	TOV	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	PF	+/-	MPG	PPG	RPG	APG	SPG	BPG	TPG
Jimmy Butler	874	22	592	142	129	39	14	41	207	442	46.8	28	78	35.9	150	186	80.6	37	-11	39.7	26.9	6.5	5.9	1.8	0.6	1.9
Bam Adebayo	850	23	412	227	85	20	15	62	167	347	48.1	0	3	0.0	78	95	82.1	71	+42	37.0	17.9	9.9	3.7	0.9	0.7	2.7
Jamal Murray	799	20	522	113	142	30	5	50	194	410	47.3	59	149	39.6	75	81	92.6	41	+181	40.0	26.1	5.7	7.1	1.5	0.3	2.5
Jayson Tatum	799	20	543	209	105	21	21	56	185	403	45.9	53	164	32.3	120	137	87.6	44	+79	40.0	27.2	10.5	5.3	1.1	1.1	2.8
Nikola Jokic	789	20	600	269	190	21	20	70	227	414	54.8	35	76	46.1	111	139	79.9	69	+169	39.5	30.0	13.5	9.5	1.1	1.0	3.5
Jaylen Brown	751	20	453	112	68	21	8	66	181	365	49.6	40	113	35.4	51	74	68.9	61	+42	37.6	22.7	5.6	3.4	1.1	0.4	3.3
Aaron Gordon	713	20	265	120	52	11	13	20	101	195	51.8	18	46	39.1	45	69	65.2	58	+187	35.7	13.3	6.0	2.6	0.6	0.7	1.0
Caleb Martin	694	23	291	125	36	20	9	24	109	206	52.9	44	104	42.3	29	35	82.9	55	+96	30.2	12.7	5.4	1.6	0.9	0.4	1.0
Marcus Smart	679	20	298	80	101	25	5	45	101	223	45.3	44	122	36.1	52	65	80.0	37	+49	34.0	14.9	4.0	5.1	1.3	0.3	2.3
Gabe Vincent	672	22	279	31	78	19	3	31	99	246	40.2	51	135	37.8	30	34	88.2	66	+27	30.5	12.7	1.4	3.5	0.9	0.1	1.4
Kentavious Caldwell-Pope	671	20	212	65	31	26	13	15	74	162	45.7	35	92	38.0	29	35	82.9	48	+82	33.6	10.6	3.3	1.6	1.3	0.7	0.8
Michael Porter Jr.	654	20	267	162	31	10	11	9	99	234	42.3	46	131	35.1	23	29	79.3	42	+152	32.7	13.4	8.1	1.6	0.5	0.6	0.5
Max Strus	647	23	215	83	33	8	7	6	76	189	40.2	43	135	31.9	20	25	80.0	47	-24	28.1	9.3	3.6	1.4	0.3	0.3	0.3
LeBron James	619	16	392	158	104	17	18	40	147	295	49.8	28	106	26.4	70	92	76.1	28	+12	38.7	24.5	9.9	6.5	1.1	1.1	2.5
Al Horford	617	20	133	143	59	22	34	11	51	132	38.6	28	94	29.8	3	4	75.0	47	+59	30.9	6.7	7.2	3.0	1.1	1.7	0.6
Anthony Davis	608	16	361	225	41	22	50	34	132	254	52.0	5	15	33.3	92	108	85.2	46	+54	38.0	22.6	14.1	2.6	1.4	3.1	2.1
Kyle Lowry	599	23	212	81	101	24	14	40	74	174	42.5	33	88	37.5	31	33	93.9	59	+17	26.0	9.2	3.5	4.4	1.0	0.6	1.7
Derrick White	593	20	267	59	42	12	20	18	93	184	50.5	50	110	45.5	31	34	91.2	38	+3	29.7	13.4	3.0	2.1	0.6	1.0	0.9
Austin Reaves	579	16	270	71	73	10	3	25	90	194	46.4	39	88	44.3	51	57	89.5	39	+73	36.2	16.9	4.4	4.6	0.6	0.2	1.6
Bruce Brown	530	20	240	80	38	21	9	23	90	176	51.1	18	57	31.6	42	49	85.7	49	+101	26.5	12.0	4.0	1.9	1.1	0.5	1.2
Stephen Curry	493	13	396	67	79	13	6	42	145	311	46.6	57	157	36.3	49	58	84.5	34	+47	37.9	30.5	5.2	6.1	1.0	0.5	3.2
D'Angelo Russell	473	16	213	47	74	11	5	29	83	195	42.6	27	87	31.0	20	26	76.9	32	+8	29.6	13.3	2.9	4.6	0.7	0.3	1.8
Malcolm Brogdon	473	19	226	66	55	3	5	19	82	196	41.8	33	87	37.9	29	35	82.9	29	+57	24.9	11.9	3.5	2.9	0.2	0.3	1.0
Klay Thompson	468	13	241	54	29	7	4	26	85	219	38.8	50	136	36.8	21	24	87.5	28	+20	36.0	18.5	4.2	2.2	0.5	0.3	2.0
Kevin Durant	466	11	319	96	61	9	15	39	107	224	47.8	17	51	33.3	88	96	91.7	29	-5	42.4	29.0	8.7	5.5	0.8	1.4	3.5