Kevin Garnett has gotten the most career defensive boards, with 11,453 boards.

Interpreted as:

most career defensive rebounds by a player

NAME	DREB	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Kevin Garnett	11,453	1,462	34.5	17.8	10.0	3.7	1.3	1.4	2.2	7.2	14.5	49.7	0.1	0.4	27.5	3.3	4.2	78.9	50,418	26,071	14,662	5,445	1,859	2,037	3,179	3,561	+4913
Karl Malone	11,406	1,476	37.2	25.0	10.1	3.6	1.4	0.8	3.1	9.2	17.8	51.6	0.1	0.2	27.4	6.6	8.9	74.2	54,852	36,928	14,968	5,248	2,085	1,145	4,524	4,578	+3010
Tim Duncan	11,232	1,392	34.0	19.0	10.8	3.0	0.7	2.2	2.4	7.4	14.6	50.6	0.0	0.1	17.9	4.2	6.1	69.6	47,368	26,496	15,091	4,225	1,025	3,020	3,381	3,304	+8910
Dwight Howard	10,476	1,242	31.8	15.7	11.8	1.3	0.9	1.8	2.7	5.7	9.7	58.7	0.0	0.1	21.4	4.3	7.6	56.7	39,435	19,485	14,627	1,676	1,081	2,228	3,302	3,912	+2877
Robert Parish	10,117	1,611	28.4	14.5	9.1	1.4	0.8	1.5	2.1	6.0	11.1	53.7	0.0	0.0	0.0	2.5	3.5	72.1	45,704	23,334	14,715	2,180	1,219	2,361	3,183	4,443	+105
Dirk Nowitzki	10,021	1,522	33.8	20.7	7.5	2.4	0.8	0.8	1.6	7.3	15.6	47.1	1.3	3.4	38.0	4.8	5.4	87.9	51,368	31,560	11,489	3,651	1,210	1,281	2,494	3,601	+6541
Hakeem Olajuwon	9,714	1,238	35.7	21.8	11.1	2.5	1.7	3.1	3.0	8.7	17.0	51.2	0.0	0.1	20.2	4.4	6.2	71.2	44,222	26,946	13,748	3,058	2,162	3,830	3,667	4,383	+564
Moses Malone	9,481	1,329	33.9	20.6	12.2	1.4	0.8	1.3	3.1	7.1	14.5	49.1	0.0	0.1	10.0	6.4	8.3	76.9	45,071	27,409	16,212	1,796	1,089	1,733	3,804	3,076
LeBron James	9,458	1,492	37.9	27.1	7.5	7.4	1.5	0.7	3.5	9.9	19.6	50.6	1.6	4.6	34.8	5.6	7.6	73.6	56,598	40,474	11,185	11,009	2,275	1,111	5,211	2,682	+7443
Kareem Abdul-Jabbar	9,394	1,239	35.3	22.9	10.0	3.5	0.9	2.6	2.7	9.4	16.8	56.1	0.0	0.0	5.6	4.0	5.4	73.6	43,787	28,316	12,369	4,302	1,160	3,189	2,527	3,667
Shaquille O'Neal	8,890	1,207	34.7	23.7	10.9	2.5	0.6	2.3	2.7	9.4	16.1	58.2	0.0	0.0	4.5	4.9	9.3	52.7	41,918	28,596	13,099	3,026	739	2,732	3,310	4,146	+4887
Patrick Ewing	8,855	1,183	34.3	21.0	9.8	1.9	1.0	2.4	3.0	8.2	16.3	50.4	0.0	0.1	15.2	4.6	6.2	74.0	40,594	24,815	11,607	2,215	1,136	2,894	3,537	4,034	+412
Dikembe Mutombo	8,551	1,196	30.8	9.8	10.3	1.0	0.4	2.8	1.8	3.5	6.7	51.8	0.0	0.0	0.0	2.8	4.1	68.4	36,791	11,729	12,359	1,240	494	3,289	2,173	3,383	+1607
Buck Williams	8,491	1,307	32.5	12.8	10.0	1.3	0.8	0.8	2.1	4.9	8.9	54.9	0.0	0.0	16.7	3.0	4.6	66.4	42,464	16,784	13,017	1,646	1,080	1,100	2,784	4,267	+155
Charles Barkley	8,286	1,073	36.7	22.1	11.7	3.9	1.5	0.8	3.1	7.9	14.5	54.1	0.5	1.9	26.6	5.9	8.1	73.5	39,330	23,757	12,546	4,215	1,648	888	3,376	3,287	+532
Charles Oakley	8,281	1,282	31.4	9.7	9.5	2.5	1.1	0.3	2.2	3.8	8.0	47.1	0.1	0.2	25.3	2.1	2.7	76.1	40,280	12,417	12,205	3,217	1,351	384	2,785	4,421	+171
Jack Sikma	8,274	1,107	33.4	15.6	9.8	3.2	1.0	0.9	2.3	5.8	12.5	46.4	0.2	0.7	32.8	3.9	4.6	84.9	36,943	17,287	10,816	3,488	1,162	1,048	2,586	3,879
Pau Gasol	8,220	1,226	33.4	17.0	9.2	3.2	0.5	1.6	2.2	6.5	12.8	50.7	0.1	0.4	36.8	3.9	5.1	75.3	41,001	20,894	11,305	3,925	606	1,941	2,638	2,632	+1831
Kevin Willis	7,769	1,424	26.9	12.1	8.4	0.9	0.7	0.5	1.8	5.0	10.2	48.7	0.0	0.1	21.1	2.1	3.0	71.3	38,362	17,253	11,901	1,328	958	751	2,520	4,172	-825
Dennis Rodman	7,625	911	31.7	7.3	13.1	1.8	0.7	0.6	1.6	3.0	5.8	52.1	0.1	0.4	23.1	1.2	2.0	58.4	28,839	6,683	11,954	1,600	611	531	1,484	2,843	+827
Bill Laimbeer	7,581	1,068	31.8	12.9	9.7	2.0	0.7	0.9	1.5	5.2	10.5	49.8	0.2	0.6	32.6	2.3	2.7	83.7	33,956	13,790	10,400	2,184	710	965	1,594	3,633
David Robinson	7,414	987	34.7	21.1	10.6	2.5	1.4	3.0	2.4	7.5	14.4	51.8	0.0	0.1	25.0	6.1	8.3	73.6	34,271	20,790	10,497	2,441	1,388	2,954	2,417	2,835	+2454
DeAndre Jordan	7,394	1,055	25.8	8.8	10.0	0.9	0.5	1.5	1.3	3.6	5.3	67.4	0.0	0.0	15.4	1.7	3.5	47.5	27,176	9,274	10,501	992	555	1,540	1,402	2,610	+1071
Shawn Marion	7,369	1,163	34.5	15.2	8.7	1.9	1.5	1.1	1.5	6.3	12.9	48.4	0.7	2.1	33.1	2.0	2.5	81.0	40,097	17,700	10,101	2,198	1,759	1,233	1,750	2,535	+1971
Larry Bird	7,217	897	38.4	24.3	10.0	6.3	1.7	0.8	3.1	9.6	19.3	49.6	0.7	1.9	37.6	4.4	5.0	88.6	34,443	21,791	8,974	5,695	1,556	755	2,816	2,279