Stephen Curry has the most career three-point attempts in the playoffs, with 1,557 attempts.

player with most three pointers attempted in a playoffs career

NAME	3PA	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Stephen Curry	1,557	147	37.4	27.0	5.3	6.2	1.5	0.3	3.3	9.0	19.9	45.3	4.2	39.7	4.7	5.3	88.9	5,492	3,966	786	912	223	44	489	375	+945
LeBron James	1,406	285	41.3	28.4	9.0	7.2	1.7	1.0	3.6	10.2	20.5	49.6	1.6	33.2	6.4	8.7	74.0	11,775	8,102	2,569	2,052	476	274	1,027	651	+1307
Klay Thompson	1,237	158	36.9	19.2	4.0	2.2	0.9	0.5	1.7	7.1	16.4	43.6	3.2	40.5	1.8	2.1	84.5	5,830	3,032	626	351	150	85	274	411	+615
James Harden	1,213	163	36.0	22.7	5.5	6.3	1.7	0.5	3.4	6.8	16.0	42.5	2.5	34.0	6.6	7.6	87.0	5,875	3,708	893	1,034	270	89	562	490	+297
Kevin Durant	1,026	169	40.5	29.3	7.8	4.2	1.0	1.2	3.2	9.9	20.8	47.6	2.2	35.5	7.4	8.5	86.9	6,847	4,952	1,318	704	172	200	549	425	+650
Ray Allen	959	171	35.5	16.1	3.8	2.6	1.0	0.2	1.6	5.4	12.3	44.3	2.3	40.1	3.0	3.4	88.3	6,064	2,749	648	449	164	41	274	402	+586
Manu Ginobili	905	218	27.9	14.0	4.0	3.8	1.3	0.3	2.2	4.4	10.1	43.3	1.5	35.8	3.8	4.6	81.7	6,075	3,054	874	827	292	61	481	588	+951
Kobe Bryant	882	220	39.3	25.6	5.1	4.7	1.4	0.7	2.9	9.2	20.5	44.8	1.3	33.1	6.0	7.4	81.6	8,641	5,640	1,119	1,040	310	144	647	660	+555
Reggie Miller	820	144	36.9	20.6	2.9	2.5	1.0	0.2	1.8	6.5	14.5	44.9	2.2	39.0	5.3	6.0	89.3	5,308	2,972	416	357	146	34	257	275	+170
Danny Green	812	169	25.3	7.9	3.2	1.2	1.0	0.7	0.8	2.8	7.0	40.4	1.9	38.8	0.4	0.6	74.5	4,271	1,338	541	200	176	125	143	347	+602
JR Smith	801	140	27.9	10.7	3.0	1.3	0.9	0.3	1.0	3.7	9.3	39.7	2.1	36.7	1.2	1.6	70.6	3,909	1,493	424	187	127	38	143	355	+272
Paul Pierce	777	170	36.6	18.7	5.8	3.4	1.2	0.6	2.8	6.0	14.2	42.3	1.6	35.5	5.1	6.1	83.0	6,229	3,180	985	579	204	105	476	547	+160
Paul George	757	111	39.0	21.2	7.4	4.1	1.5	0.5	3.1	6.8	16.1	42.3	2.4	35.0	5.1	6.2	82.7	4,327	2,350	826	456	167	60	345	368	+206
Jason Kidd	733	158	38.5	12.9	6.7	8.0	1.9	0.3	2.8	4.6	11.7	39.1	1.5	32.2	2.3	3.0	78.1	6,088	2,043	1,058	1,263	302	52	450	348	+110
Chauncey Billups	729	146	36.4	17.3	3.4	5.7	1.0	0.2	2.2	5.0	12.3	41.1	1.8	36.6	5.4	6.1	88.0	5,321	2,526	492	831	148	23	322	373	+578
Robert Horry	728	244	28.0	7.9	5.6	2.4	1.1	0.9	1.2	2.7	6.4	42.6	1.1	35.9	1.4	2.0	72.2	6,823	1,939	1,361	575	276	225	282	717	+590
Derek Fisher	715	259	26.5	8.3	2.2	2.3	1.1	0.1	0.9	2.8	6.7	42.2	1.1	39.9	1.5	1.9	80.5	6,856	2,146	578	598	272	16	237	645	+725
Kyle Lowry	695	133	33.0	13.8	4.3	5.4	1.3	0.4	2.3	4.6	11.1	41.4	1.8	34.1	2.8	3.5	80.3	4,394	1,829	573	715	172	47	304	435	+194
Scottie Pippen	660	208	39.0	17.5	7.6	5.0	1.9	0.9	2.9	6.4	14.5	44.4	1.0	30.3	3.7	5.1	72.4	8,105	3,642	1,583	1,048	395	185	602	686	+232
Chris Paul	654	149	36.5	20.0	4.9	8.3	1.9	0.2	2.5	7.4	15.3	48.4	1.6	37.3	3.5	4.1	85.4	5,442	2,981	730	1,233	287	31	377	437	+130
Kyle Korver	649	145	23.2	8.0	2.5	1.0	0.6	0.4	0.8	2.7	6.4	41.7	1.8	39.1	0.9	1.0	89.5	3,370	1,156	360	152	81	56	119	282	+257
Jayson Tatum	638	96	38.7	23.8	7.6	4.6	1.1	0.9	2.9	8.0	18.0	44.3	2.4	35.6	5.5	6.6	83.4	3,717	2,287	730	443	108	88	282	250	+274
Marcus Smart	622	108	33.1	12.8	4.3	4.9	1.3	0.5	2.3	4.2	10.6	39.6	1.9	33.4	2.4	3.2	76.2	3,572	1,377	469	524	144	51	252	304	+46
Jae Crowder	619	114	28.7	10.1	5.2	1.8	0.9	0.5	0.8	3.4	8.6	39.2	1.8	33.4	1.6	2.0	77.0	3,269	1,156	592	209	102	53	96	304	-134
Kawhi Leonard	587	139	35.5	21.3	7.8	2.9	1.8	0.7	1.9	7.6	14.8	51.1	1.7	39.9	4.4	5.3	84.4	4,929	2,958	1,089	399	248	94	263	311	+649