Mark Giordano was the oldest defenseman in 2023-24. He was 40 years old.

	NAME	AGE	SEASON	TM	GP	G	A	P	+/-	PIM	PPG	PPA	SHG	SHA	GWG	OTG	S	S%	FOW	FO	HIT	BKS	TKA	GVA	TOI/GP
1	Mark Giordano M. Giordano	40	2023-24	TOR	46	3	6	9	+10	49	0	0	0	0	1	0	59	5.1	0	0	53	86	9	27	16:37
2	Ryan Suter R. Suter	39	2023-24	DAL	82	2	15	17	+14	28	0	0	0	1	1	0	102	2.0	0	0	86	111	16	30	18:56
3	Brent Burns B. Burns	38	2023-24	CAR	82	10	33	43	+19	20	4	16	1	0	0	0	185	5.4	0	0	41	87	35	56	21:30
4	Alex Goligoski A. Goligoski	38	2023-24	MIN	36	0	10	10	-8	18	0	2	0	0	0	0	32	0.0	0	0	27	41	3	12	14:49
5	Jack Johnson J. Johnson	37	2023-24	COL	80	3	13	16	+15	38	0	0	0	0	0	0	76	3.9	0	0	78	89	12	20	14:56
6	Marc Staal M. Staal	37	2023-24	PHI	35	1	4	5	+2	14	0	0	0	0	0	0	20	5.0	0	0	31	44	4	9	13:49
7	Kris Letang K. Letang	36	2023-24	PIT	82	10	41	51	+13	62	0	5	0	1	2	0	164	6.1	0	0	141	136	47	64	24:41
8	Alec Martinez A. Martinez	36	2023-24	VGK	55	4	13	17	-2	6	0	3	0	0	0	0	72	5.6	0	0	29	165	12	25	19:03
9	Jeff Petry J. Petry	36	2023-24	DET	73	3	21	24	-7	39	0	0	0	1	0	0	84	3.6	0	0	150	134	10	40	18:48
10	Marc-Edouard Vlasic M. Vlasic	36	2023-24	SJS	57	6	6	12	-27	26	0	0	0	0	1	0	72	8.3	0	0	35	108	16	27	16:17
11	Erik Johnson E. Johnson	35	2023-24	TOT	67	5	1	6	-14	26	0	0	0	0	1	0	60	8.3	0	0	143	97	6	15	14:28
12	Kevin Shattenkirk K. Shattenkirk	35	2023-24	BOS	61	6	18	24	-2	18	2	9	0	0	0	0	78	7.7	0	0	63	85	13	18	15:47
13	Robert Bortuzzo R. Bortuzzo	34	2023-24	TOT	27	0	0	0	0	27	0	0	0	0	0	0	11	0.0	0	0	38	51	4	4	13:44
14	John Carlson J. Carlson	34	2023-24	WSH	82	10	43	53	-7	40	6	15	0	0	5	0	176	5.7	0	0	69	194	58	82	25:54
15	Ian Cole I. Cole	34	2023-24	VAN	78	2	9	11	+10	61	0	0	0	0	0	0	61	3.3	0	0	83	166	18	42	18:41
16	Drew Doughty D. Doughty	34	2023-24	LAK	82	15	35	50	+15	44	7	13	0	0	3	1	135	11.1	0	0	110	142	20	45	25:48
17	Ryan McDonagh R. McDonagh	34	2023-24	NSH	74	3	29	32	+19	21	0	4	0	0	1	1	91	3.3	0	0	38	139	35	56	21:47
18	Tyler Myers T. Myers	34	2023-24	VAN	77	5	24	29	+16	77	0	0	2	0	0	0	93	5.4	0	0	110	136	13	33	18:57
19	Alex Pietrangelo A. Pietrangelo	34	2023-24	VGK	64	4	29	33	-5	24	0	9	0	1	2	1	141	2.8	0	0	46	160	50	40	23:34
20	Luke Schenn L. Schenn	34	2023-24	NSH	63	1	6	7	+1	43	0	0	0	0	0	0	81	1.2	0	0	202	76	14	41	15:11
21	Brendan Smith B. Smith	34	2023-24	NJD	63	5	10	15	-3	61	0	0	0	0	0	0	60	8.3	0	0	117	101	16	29	16:06
22	Jared Spurgeon J. Spurgeon	34	2023-24	MIN	16	0	5	5	+5	2	0	3	0	0	0	0	21	0.0	0	0	14	29	3	1	23:20
23	Christopher Tanev C. Tanev	34	2023-24	TOT	75	2	17	19	+22	24	0	0	0	0	0	0	56	3.6	0	0	45	207	25	38	19:41
24	Zach Bogosian Z. Bogosian	33	2023-24	TOT	65	3	11	14	+11	63	0	0	0	1	1	0	83	3.6	0	0	109	83	11	25	17:53
25	TJ Brodie	33	2023-24	TOR	78	1	25	26	+17	40	0	0	0	0	0	0	52	1.9	0	0	41	159	20	53	21:43