Bill Russell has won the most career championships, with 11 championships.

which player has won the most championships

NAME	CHAMPS	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	+/-
Bill Russell	11	963	42.3	15.1	22.5	4.3				5.9	13.4	44.0				3.3	5.8	56.1	40,726	14,522	21,620	4,100				2,592
Sam Jones	10	871	27.9	17.7	4.9	2.5				7.2	15.8	45.6				3.3	4.1	80.3	24,285	15,411	4,305	2,209				1,735
John Havlicek	8	1,270	36.6	20.8	6.3	4.8	1.2	0.3	2.5	8.3	18.8	43.9				4.2	5.2	81.5	46,471	26,395	8,007	6,114	476	117	204	3,281
Tom Sanders	8	916	24.2	9.6	6.3	1.1				3.7	8.7	42.8				2.1	2.8	76.7	22,164	8,766	5,798	1,026				3,044
K.C. Jones	8	676	25.9	7.4	3.5	4.3				2.8	7.3	38.7				1.7	2.7	64.7	17,501	5,011	2,399	2,908				1,816
Tom Heinsohn	8	654	29.4	18.6	8.8	2.0				7.3	18.0	40.5				4.0	5.1	79.0	19,254	12,194	5,749	1,318				2,454
Robert Horry	7	1,107	24.5	7.0	4.8	2.1	1.0	0.9	1.2	2.5	6.0	42.5	0.7	2.1	34.1	1.2	1.6	72.6	27,069	7,715	5,269	2,343	1,158	1,035	1,378	2,680	+2683
Frank Ramsey	7	623	24.6	13.4	5.5	1.8				4.7	11.8	39.9				4.0	4.9	80.4	15,330	8,378	3,410	1,134				2,158
Scottie Pippen	6	1,178	34.9	16.1	6.4	5.2	2.0	0.8	2.8	6.3	13.3	47.3	0.8	2.5	32.6	2.7	3.8	70.4	41,069	18,940	7,494	6,135	2,307	947	3,257	3,329	+2022
Michael Jordan	6	1,072	38.3	30.1	6.2	5.3	2.3	0.8	2.7	11.4	22.9	49.7	0.5	1.7	32.7	6.8	8.2	83.5	41,011	32,292	6,672	5,633	2,514	893	2,924	2,783	+1438
Kareem Abdul-Jabbar	6	1,560	36.8	24.6	11.2	3.6	0.9	2.6	2.7	10.2	18.1	55.9	0.0	0.0	5.6	4.3	6.0	72.1	57,446	38,387	17,440	5,660	1,160	3,189	2,527	4,657
Jim Loscutoff	6	511	18.5	6.2	5.6	0.7				2.6	7.6	34.5				1.0	1.5	65.3	9,431	3,156	2,848	353				1,497
Bob Cousy	6	924	35.3	18.4	5.2	7.5				6.7	17.8	37.5				5.0	6.2	80.3	30,165	16,960	4,786	6,955				2,242
Tim Duncan	5	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
Kobe Bryant	5	1,346	36.1	25.0	5.2	4.7	1.4	0.5	3.0	8.7	19.5	44.7	1.4	4.1	32.9	6.2	7.4	83.7	48,637	33,643	7,047	6,306	1,944	640	4,010	3,353	+4153
Derek Fisher	5	1,287	25.4	8.3	2.1	3.0	1.1	0.1	1.1	2.9	7.2	39.9	1.0	2.6	37.4	1.6	1.9	81.7	32,719	10,713	2,658	3,804	1,352	98	1,473	2,684	+4164
Steve Kerr	5	910	17.8	6.0	1.2	1.8	0.5	0.1	0.6	2.2	4.7	47.9	0.8	1.8	45.4	0.7	0.8	86.4	16,207	5,437	1,060	1,658	476	46	504	847	+685
Ron Harper	5	1,009	30.9	13.8	4.3	3.9	1.7	0.7	2.2	5.3	11.8	44.6	0.5	1.8	28.9	2.7	3.8	72.0	31,199	13,910	4,309	3,916	1,716	729	2,251	2,324	+1199
Dennis Rodman	5	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
Magic Johnson	5	906	36.7	19.5	7.2	11.2	1.9	0.4	3.9	6.9	13.2	52.0	0.4	1.2	30.3	5.5	6.5	84.8	33,245	17,707	6,559	10,141	1,724	374	3,506	2,050
Michael Cooper	5	873	27.1	8.9	3.2	4.2	1.2	0.6	1.6	3.5	7.4	46.9	0.5	1.4	34.0	1.5	1.8	83.3	23,635	7,729	2,769	3,666	1,033	523	1,429	2,329
Larry Siegfried	5	550	24.8	10.8	2.8	3.5				3.9	9.5	40.9				3.0	3.5	85.4	13,632	5,960	1,567	1,950				1,307
Don Nelson	5	1,053	20.6	10.3	4.9	1.4	0.3	0.1		3.8	8.0	48.0				2.7	3.6	76.5	21,685	10,898	5,192	1,526	65	35		2,451
Slater Martin	5	745	35.9	9.8	3.4	4.2				3.5	9.7	36.4				2.8	3.7	76.2	21,889	7,337	2,302	3,160				2,238
George Mikan	5	439	34.4	23.1	13.4	2.8				8.1	20.0	40.4				7.0	8.9	78.2	8,350	10,156	4,167	1,245				1,862