what team has played in the most world series since 1955

Since 1955, the New York Yankees have the most appearances by a team in the World Series, with 21 appearances.

	TEAM	SERIES	G	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Yankees	World Series	123	.520	64	59	4,150	519	1,023	151	17	131	503	418	33	825	52	26	4,663	1,601	299	39	23	56	91	.247	.319	.386	.705
2	Dodgers	World Series	86	.512	44	42	2,823	332	652	98	16	93	314	281	22	591	49	33	3,178	1,061	207	33	19	22	47	.231	.304	.376	.679
3	Cardinals	World Series	64	.484	31	33	2,116	248	501	96	14	39	223	196	10	377	47	19	2,358	742	149	25	11	28	33	.237	.303	.351	.654
4	Braves	World Series	49	.449	22	27	1,639	180	386	64	8	46	176	176	9	340	32	14	1,862	604	118	25	13	15	36	.236	.311	.369	.679
5	Red Sox	World Series	40	.625	25	15	1,371	186	346	69	8	38	182	160	14	294	6	6	1,573	545	115	16	12	25	25	.252	.334	.398	.731
6	Phillies	World Series	34	.441	15	19	1,124	141	267	51	4	42	137	131	9	255	26	7	1,278	452	97	5	9	11	24	.238	.320	.402	.722
7	Athletics	World Series	32	.531	17	15	1,042	104	227	35	6	25	99	112	7	232	21	11	1,183	349	66	18	4	14	13	.218	.297	.335	.632
8	Orioles	World Series	33	.576	19	14	1,064	123	231	32	3	32	113	102	6	191	5	5	1,186	365	67	7	7	12	24	.217	.288	.343	.631
9	Giants	World Series	34	.529	18	16	1,134	154	285	47	8	36	148	93	6	251	13	6	1,254	456	91	12	9	12	16	.251	.309	.402	.711
10	Reds	World Series	32	.531	17	15	1,074	127	262	50	10	25	123	102	7	151	31	13	1,202	407	85	10	9	18	19	.244	.311	.379	.690
11	Astros	World Series	30	.433	13	17	1,038	120	246	50	2	36	116	100	14	253	22	4	1,165	408	88	7	6	15	23	.237	.311	.393	.704
12	Mets	World Series	29	.448	13	16	1,016	106	241	30	2	27	91	87	10	208	9	6	1,138	356	59	17	8	13	18	.237	.302	.350	.652
13	Royals	World Series	25	.520	13	12	869	105	232	48	5	15	100	82	4	185	21	6	970	335	68	8	7	11	26	.267	.331	.386	.716
14	Tigers	World Series	21	.429	9	12	676	74	148	18	4	22	73	71	9	159	8	6	766	240	44	7	3	6	16	.219	.300	.355	.655
15	Rangers	World Series	17	.471	8	9	563	68	127	25	1	20	66	60	3	126	4	5	636	214	46	4	6	5	16	.226	.301	.380	.681
16	Indians	World Series	20	.400	8	12	674	90	162	29	2	19	82	89	5	157	17	8	780	252	50	8	4	8	16	.240	.332	.374	.705
17	Twins	World Series	21	.524	11	10	694	82	162	25	9	21	81	69	4	138	15	6	774	268	55	5	2	12	14	.233	.306	.386	.692
18	Pirates	World Series	21	.571	12	9	723	82	197	38	3	12	79	54	7	108	7	5	799	277	53	10	5	10	14	.272	.327	.383	.710
19	Rays	World Series	11	.273	3	8	350	37	75	10	1	13	35	26	1	106	9	4	381	126	24	2	2	1	9	.214	.269	.360	.629
20	Diamondbacks	World Series	12	.417	5	7	420	59	112	24	1	9	58	33	6	111	9	3	473	165	34	10	4	7	9	.267	.326	.393	.719
21	Marlins	World Series	13	.615	8	5	453	54	115	20	1	10	51	50	2	96	6	3	515	167	31	6	4	5	11	.254	.328	.369	.697
22	Blue Jays	World Series	12	.667	8	4	402	62	109	21	5	12	62	43	4	63	13	4	459	176	38	2	8	4	9	.271	.341	.438	.779
23	Padres	World Series	9	.111	1	8	300	28	76	14	1	6	25	23	0	55	3	5	329	110	21	1	5	0	4	.253	.302	.367	.668
24	White Sox	World Series	10	.600	6	4	353	43	96	19	2	10	39	35	5	63	7	4	399	149	31	5	1	4	11	.272	.345	.422	.767
25	Nationals	World Series	7	.571	4	3	241	33	58	8	1	11	32	27	1	61	4	0	272	101	20	3	0	1	5	.241	.320	.419	.739