Jimmie Foxx has the most career ribbies by a player younger than 30, with 1,347 RBIs.

Interpreted as:

most rbis by a player before age 30

	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	Jimmie Foxx J. Foxx	1,347	1,561	5,551	1,216	1,852	313	93	379	987	9	859	71		6,608	3,488	785	61				.334	.435	.628	1.063
2	Mel Ott M. Ott	1,309	1,739	6,148	1,247	1,939	336	61	342	1,040	37	516	60		7,300	3,423	739	75				.315	.417	.557	.974
3	Lou Gehrig L. Gehrig	1,202	1,288	4,763	1,130	1,632	339	116	282	837	23	521	67		5,724	3,049	737	101				.343	.443	.640	1.083
4	Alex Rodriguez A. Rodriguez	1,176	1,528	5,958	1,197	1,825	327	24	409	695	90	1,201	214	55	6,818	3,427	760	16	59	49	135	.306	.384	.575	.959
5	Ken Griffey Jr. K. Griffey Jr.	1,152	1,535	5,832	1,063	1,742	320	30	398	747	47	984	167	60	6,688	3,316	748	6	56	170	109	.299	.380	.569	.948
6	Miguel Cabrera M. Cabrera	1,140	1,526	5,724	974	1,822	388	14	323	715	43	1,116	34	18	6,542	3,207	725	5	55	162	195	.318	.395	.560	.955
7	Hank Aaron H. Aaron	1,121	1,511	5,940	1,078	1,898	321	77	342	541	20	607	103	37	6,582	3,399	740	19	62	124	158	.320	.375	.572	.947
8	Albert Pujols A. Pujols	1,112	1,399	5,146	1,071	1,717	387	14	366	811	69	570	61	30	6,082	3,230	767	1	55	198	180	.334	.427	.628	1.055
9	Juan Gonzalez J. Gonzalez	1,075	1,248	4,831	791	1,421	282	19	340	344	48	947	21	15	5,283	2,761	641	2	58	63	129	.294	.343	.572	.915
10	Mickey Mantle M. Mantle	1,063	1,552	5,518	1,243	1,700	241	66	374	1,129	9	1,140	123	33	6,697	3,195	681	13	28	69	58	.308	.425	.579	1.004
11	Joe Medwick J. Medwick	1,049	1,360	5,539	954	1,838	416	103	180	312	22	447	32		5,902	3,000	699	29			54	.332	.370	.542	.911
12	Al Simmons A. Simmons	1,048	1,117	4,478	842	1,621	326	92	178	304	14	342	62		4,894	2,665	596	98				.362	.404	.595	.999
13	Johnny Bench J. Bench	1,038	1,513	5,554	824	1,491	294	21	287	655	16	941	55	32	6,304	2,688	602	5	74	109	142	.268	.343	.484	.827
14	Andruw Jones A. Jones	1,032	1,625	5,899	973	1,570	309	32	345	660	78	1,275	133	53	6,696	2,978	686	6	53	62	146	.266	.345	.505	.850
15	Hank Greenberg H. Greenberg	1,000	1,030	3,932	828	1,281	312	61	247	611	12	630	49		4,589	2,456	620	34			23	.326	.418	.625	1.043
16	Eddie Mathews E. Mathews	993	1,482	5,466	1,032	1,548	223	55	370	929	16	888	56	29	6,481	2,991	648	31	39	55	76	.283	.387	.547	.934
17	Frank Robinson F. Robinson	975	1,469	5,410	1,025	1,634	311	50	314	677	112	769	158	57	6,265	2,987	675	13	53	125	139	.302	.388	.552	.940
18	Vern Stephens V. Stephens	968	1,303	5,104	833	1,475	239	37	207	561	4	532	20		5,695	2,409	483	26			125	.289	.360	.472	.832
19	Goose Goslin G. Goslin	968	1,292	4,932	831	1,616	276	122	145	490	43	336	125		5,607	2,571	543	142				.328	.393	.521	.915
20	Manny Ramirez M. Ramirez	964	1,142	4,112	785	1,290	277	13	286	650	46	943	28	25	4,858	2,451	576	2	48	80	110	.314	.409	.596	1.005
21	Al Kaline A. Kaline	957	1,595	5,979	958	1,837	297	59	232	650	31	516	98	44	6,746	2,948	588	35	51	68	164	.307	.375	.493	.868
22	Ruben Sierra R. Sierra	952	1,454	5,679	809	1,547	306	50	220	419	7	834	126	47	6,197	2,613	576	1	91	75	131	.272	.318	.460	.779
23	Del Ennis D. Ennis	948	1,377	5,311	751	1,530	271	56	214	473	25	528	34	12	5,839	2,555	541	15	15	0	147	.288	.348	.481	.829
24	Ron Santo R. Santo	937	1,536	5,659	816	1,592	247	54	253	767	27	896	27	33	6,531	2,706	554	9	69	66	163	.281	.366	.478	.844
25	Orlando Cepeda O. Cepeda	933	1,379	5,167	804	1,601	285	22	268	349	74	771	112	59	5,648	2,734	575	2	56	99	140	.310	.358	.529	.888