Juan Soto has the most career walks by a player younger than 26, with 769 walks.

Interpreted as:

most walks by player before turning 26 years old

	NAME	BB	G	AB	R	H	2B	3B	HR	RBI	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Juan Soto J. Soto	769	936	3,280	655	934	179	15	201	592	16	696	57	23	4,087	1,746	395	2	20	67	84	.285	.421	.532	.953
2	Mickey Mantle M. Mantle	668	952	3,418	762	1,080	164	49	207	669	5	655	58	21	4,114	1,963	420	9	14	35	26	.316	.427	.574	1.001
3	Mel Ott M. Ott	625	1,136	3,949	799	1,249	224	41	211	848	21	301	38		4,649	2,188	476	54				.316	.412	.554	.966
4	Eddie Yost E. Yost	619	865	3,185	503	821	163	30	46	282	34	347	28	7	3,891	1,182	239	53			62	.258	.384	.371	.755
5	Bryce Harper B. Harper	585	927	3,306	610	922	183	18	184	521	23	834	75	31	3,957	1,693	385	9	34	70	66	.279	.388	.512	.900
6	Eddie Mathews E. Mathews	560	880	3,206	606	902	147	33	222	586	7	524	29	16	3,807	1,781	402	15	19	42	41	.281	.387	.556	.943
7	Jimmie Foxx J. Foxx	557	959	3,323	737	1,127	196	66	222	831	6	470	31		3,940	2,121	484	54				.339	.435	.638	1.073
8	Mike Trout M. Trout	529	878	3,236	651	999	191	39	190	548	52	841	156	29	3,856	1,838	420	0	39	58	43	.309	.410	.568	.978
9	Rickey Henderson R. Henderson	520	791	2,916	586	850	129	29	51	271	20	416	493	138	3,488	1,190	209	16	16	21	40	.291	.400	.408	.808
10	Ted Williams T. Williams	493	586	2,104	541	749	154	33	127	515	12	196	11		2,613	1,350	314	4			45	.356	.481	.642	1.122
11	Donie Bush D. Bush	487	765	2,748	548	692	82	31	7		17		224		3,400	857	120	148				.252	.368	.312	.680
12	Arky Vaughan A. Vaughan	467	849	3,164	572	1,057	166	78	58	502	26	149	40		3,712	1,553	302	55				.334	.424	.491	.915
13	Frank Thomas F. Thomas	463	574	2,028	411	657	138	7	121	428	11	331	11	8	2,533	1,172	266	0	31	45	57	.324	.447	.578	1.024
14	Adam Dunn A. Dunn	462	661	2,271	420	564	127	6	158	374	40	733	41	16	2,783	1,177	291	1	9	48	30	.248	.383	.518	.901
15	Harlond Clift H. Clift	461	690	2,549	530	739	145	36	94	389	25	331	34		3,054	1,238	275	19				.290	.404	.486	.889
16	Rusty Staub R. Staub	433	991	3,455	386	958	182	17	86	449	30	372	11	10	3,979	1,432	285	31	30	86	86	.277	.360	.414	.774
17	Elbie Fletcher E. Fletcher	427	777	2,727	395	741	129	36	47	350	21	259	24		3,200	1,083	212	25			29	.272	.374	.397	.772
18	Ken Griffey Jr. K. Griffey Jr.	426	917	3,440	570	1,039	201	19	189	585	18	530	92	43	3,920	1,845	409	5	31	106	68	.302	.379	.536	.915
19	Al Kaline A. Kaline	408	1,051	3,919	598	1,200	185	38	140	612	19	336	70	38	4,405	1,881	363	24	35	44	107	.306	.371	.480	.851
20	Cass Michaels C. Michaels	407	938	3,222	368	851	108	36	29	365	18	278	43	1	3,697	1,118	173	50			95	.264	.350	.347	.697
21	Lou Gehrig L. Gehrig	403	666	2,382	554	813	185	65	129	560	11	307	28		2,867	1,515	379	71				.341	.439	.636	1.075
22	Albert Pujols A. Pujols	401	790	2,954	629	982	227	11	201	621	44	344	29	15	3,428	1,834	439	1	28	70	94	.332	.416	.621	1.037
23	Charlie Keller C. Keller	394	528	1,898	389	566	83	38	90	397	3	235	34		2,310	995	211	15			23	.298	.420	.524	.944
24	Joe Morgan J. Morgan	389	573	2,080	338	554	80	38	39	166	9	254	105	36	2,509	827	157	20	11	10	12	.266	.382	.398	.780
25	Andruw Jones A. Jones	387	1,001	3,593	587	961	193	23	190	576	39	760	114	40	4,055	1,770	406	6	30	28	71	.267	.343	.493	.835