Pedro Guerrero has the most intentional walks in an NLCS, with 5 intentional walks.

Interpreted as:

most ibb by a player in one nlcs

	NAME	IBB	SEASON	SERIES	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	GIDP	AVG	OBP	SLG	OPS
1	Pedro Guerrero P. Guerrero	5	1985	NLCS	LAD	6	20	2	5	1	0	0	4	5	0	2	2	0	26	6	1	0	1	1	.250	.385	.300	.685
2	Albert Pujols A. Pujols	4	2006	NLCS	STL	7	22	5	7	1	0	1	1	7	0	3	0	0	29	11	2	0	0	0	.318	.483	.500	.983
3	Chipper Jones C. Jones	4	1999	NLCS	ATL	6	19	3	5	2	0	0	1	9	1	7	3	0	29	7	2	0	0	0	.263	.517	.368	.886
4	Jose Cruz J. Cruz	4	1980	NLCS	HOU	5	15	3	6	1	1	0	4	8	0	1	0	0	23	9	2	0	0	1	.400	.609	.600	1.209
5	Sammy Sosa S. Sosa	3	2003	NLCS	CHC	7	26	7	8	1	0	2	6	6	1	9	0	0	33	15	3	0	0	0	.308	.455	.577	1.031
6	Barry Bonds B. Bonds	3	2002	NLCS	SFG	5	11	5	3	0	1	1	6	10	0	2	0	0	22	8	2	0	1	0	.273	.591	.727	1.318
7	Mike Piazza M. Piazza	3	2000	NLCS	NYM	5	17	7	7	3	0	2	4	5	0	0	0	0	22	16	5	0	0	1	.412	.545	.941	1.487
8	Brian Jordan B. Jordan	3	1999	NLCS	ATL	6	25	3	5	0	0	2	5	3	1	5	0	0	29	11	2	0	0	0	.200	.310	.440	.750
9	Craig Counsell C. Counsell	3	1997	NLCS	FLA	5	14	0	6	0	0	0	2	3	0	3	0	0	17	6	0	0	0	0	.429	.529	.429	.958
10	Keith Hernandez K. Hernandez	3	1986	NLCS	NYM	6	26	3	7	1	1	0	3	3	0	6	0	0	29	10	2	0	0	0	.269	.345	.385	.729
11	Jack Clark J. Clark	3	1985	NLCS	STL	6	21	4	8	0	0	1	4	5	0	5	0	0	26	11	1	0	0	0	.381	.500	.524	1.024
12	Larry Bowa L. Bowa	3	1980	NLCS	PHI	5	19	2	6	0	0	0	0	3	0	3	1	0	23	6	0	1	0	0	.316	.409	.316	.725
13	Ron Cey R. Cey	3	1974	NLCS	LAD	4	16	2	5	3	0	1	1	3	0	2	0	0	19	11	4	0	0	0	.313	.421	.688	1.109
14	Willie McCovey W. McCovey	3	1971	NLCS	SFG	4	14	2	6	0	0	2	6	4	0	2	0	0	18	12	2	0	0	1	.429	.556	.857	1.413
15	Shohei Ohtani S. Ohtani	2	2025	NLCS	LAD	4	14	4	5	0	1	3	4	4	0	5	1	0	18	16	4	0	0	0	.357	.500	1.143	1.643
16	Kyle Schwarber K. Schwarber	2	2023	NLCS	PHI	7	22	8	8	2	0	5	5	8	0	7	0	0	30	25	7	0	0	1	.364	.533	1.136	1.670
17	Will Smith W. Smith	2	2021	NLCS	LAD	6	23	3	5	0	0	1	1	4	0	5	0	0	27	8	1	0	0	0	.217	.333	.348	.681
18	Howie Kendrick H. Kendrick	2	2019	NLCS	WSH	4	15	4	5	4	0	0	4	2	0	4	0	0	17	9	4	0	0	1	.333	.412	.600	1.012
19	Anthony Rendon A. Rendon	2	2019	NLCS	WSH	4	12	2	5	1	0	0	2	4	0	3	0	0	17	6	1	0	1	0	.417	.529	.500	1.029
20	Pete Kozma P. Kozma	2	2013	NLCS	STL	6	15	1	1	0	0	0	1	3	1	4	0	0	19	1	0	0	0	0	.067	.263	.067	.330
21	Hanley Ramirez H. Ramirez	2	2013	NLCS	LAD	5	15	1	2	0	0	0	1	3	1	5	0	0	19	2	0	0	0	1	.133	.316	.133	.449
22	Prince Fielder P. Fielder	2	2011	NLCS	MIL	6	20	4	4	2	0	2	3	4	1	4	0	0	25	12	4	0	0	2	.200	.360	.600	.960
23	Albert Pujols A. Pujols	2	2011	NLCS	STL	6	23	5	11	4	0	2	9	4	0	4	0	0	27	21	6	0	0	1	.478	.556	.913	1.469
24	Jayson Werth J. Werth	2	2010	NLCS	PHI	6	18	3	4	1	0	2	5	4	1	7	0	0	24	11	3	0	1	0	.222	.375	.611	.986
25	Manny Ramirez M. Ramirez	2	2008	NLCS	LAD	5	15	4	8	2	0	2	7	7	0	1	0	0	22	16	4	0	0	0	.533	.682	1.067	1.748