Bernie Williams has the most career RBIs in the postseason, with 80 RBIs.

Interpreted as:

MLB most rbis by a player in the postseason career

	NAME	RBI	G	AB	R	H	2B	3B	HR	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Bernie Williams B. Williams	80	121	465	83	128	29	0	22	71	3	85	8	5	545	223	51	0	6	11	17	.275	.371	.480	.850
2	Manny Ramirez M. Ramirez	78	111	410	67	117	19	0	29	72	5	91	1	1	493	223	48	0	6	12	17	.285	.394	.544	.937
3	Carlos Correa C. Correa	63	85	323	38	91	19	0	18	31	4	84	1	0	358	164	37	0	0	2	8	.282	.352	.508	.860
4	David Justice D. Justice	63	112	398	55	89	17	2	14	64	5	79	3	2	471	152	33	0	4	7	7	.224	.335	.382	.717
5	David Ortiz D. Ortiz	61	85	304	51	88	22	2	17	59	2	72	0	1	369	165	41	0	4	11	4	.289	.404	.543	.947
6	Derek Jeter D. Jeter	61	158	650	111	200	32	5	20	66	5	135	18	5	734	302	57	9	4	3	14	.308	.374	.465	.838
7	Jose Altuve J. Altuve	56	105	436	89	118	21	0	27	43	2	75	9	5	484	220	48	0	3	2	15	.271	.337	.505	.841
8	Alex Bregman A. Bregman	55	102	380	63	91	18	1	19	56	9	66	3	1	447	168	38	0	2	4	11	.239	.349	.442	.791
9	Albert Pujols A. Pujols	54	88	304	57	97	18	1	19	50	5	46	1	2	360	174	38	0	1	20	7	.319	.422	.572	.995
10	Corey Seager C. Seager	48	78	299	55	76	17	1	19	42	3	79	3	0	346	152	37	0	2	3	6	.254	.350	.508	.858
11	Reggie Jackson R. Jackson	48	77	281	41	78	14	1	18	33	3	70	5	2	318	148	33	0	1	3	5	.278	.358	.527	.885
12	Chipper Jones C. Jones	47	93	338	58	97	18	0	13	72	1	61	8	3	417	154	31	1	5	11	10	.287	.409	.456	.864
13	Giancarlo Stanton G. Stanton	44	48	177	26	45	8	0	18	20	0	49	2	0	202	107	26	0	5	1	5	.254	.322	.605	.926
14	Justin Turner J. Turner	42	87	317	43	86	19	1	13	38	13	59	5	0	370	146	33	0	2	1	6	.271	.370	.461	.831
15	Shane Victorino S. Victorino	42	60	226	31	58	11	2	7	17	11	29	10	1	259	94	20	4	1	4	3	.257	.337	.416	.753
16	Carlos Beltran C. Beltran	42	65	215	45	66	15	1	16	37	2	33	11	0	256	131	32	1	1	2	3	.307	.412	.609	1.021
17	Jim Edmonds J. Edmonds	42	64	230	33	63	16	0	13	30	2	72	2	2	263	118	29	0	1	3	1	.274	.361	.513	.874
18	Jorge Posada J. Posada	42	125	416	53	103	23	1	11	70	3	109	3	3	492	161	35	0	3	9	15	.248	.358	.387	.745
19	Yordan Alvarez Y. Alvarez	41	60	214	39	63	13	3	12	31	5	69	0	0	252	118	28	0	2	5	1	.294	.393	.551	.944
20	Aaron Judge A. Judge	41	65	246	42	58	8	0	17	40	3	91	5	1	292	117	25	0	3	3	4	.236	.346	.476	.822
21	George Springer G. Springer	41	73	301	49	79	18	0	21	34	2	81	4	1	338	160	39	0	1	1	5	.262	.340	.532	.872
22	Lance Berkman L. Berkman	41	52	186	38	59	11	1	9	31	3	41	4	1	224	99	21	0	3	6	4	.317	.417	.532	.949
23	Alex Rodriguez A. Rodriguez	41	76	278	43	72	16	0	13	39	9	77	8	3	330	127	29	1	3	4	6	.259	.365	.457	.822
24	Mickey Mantle M. Mantle	40	65	230	42	59	6	2	18	43	0	54	3	4	273	123	26	0	0	6	2	.257	.374	.535	.908
25	Yuli Gurriel Y. Gurriel	39	92	348	35	91	15	1	8	28	2	36	5	0	380	132	24	0	2	5	7	.261	.318	.379	.698