17 players are tied for the most career hat tricks by an active defenseman, with 1 hat trick. The first three are Dylan Coghlan, Cale Makar and Jakob Chychrun.

most regular-season hat tricks by a defenseman NHL active players

	NAME	HT	GP	G	A	P	+/-	PIM	PPG	PPA	SHG	SHA	GWG	OTG	S	S%	FOW	FO	FOW%	HIT	BKS	TKA	GVA	TOI/GP
1	Dylan Coghlan D. Coghlan	1	106	6	16	22	-11	22	2	2	0	0	1	0	171	3.5	0	1	0.0	103	89	27	37	13:48
2	Cale Makar C. Makar	1	336	94	272	366	+107	98	32	125	2	3	21	5	934	10.1	0	0		306	452	255	224	24:33
3	Jakob Chychrun J. Chychrun	1	482	81	143	224	-60	322	28	33	0	0	10	2	1,147	7.1	0	0		581	756	166	375	21:15
4	MacKenzie Weegar M. Weegar	1	490	54	162	216	+99	361	6	24	1	6	9	1	946	5.7	1	1	100.0	1,047	853	300	467	20:32
5	Zach Werenski Z. Werenski	1	506	96	226	322	-4	119	22	78	1	2	13	6	1,364	7.0	0	0		289	649	245	293	23:31
6	Brandon Montour B. Montour	1	540	72	194	266	+48	399	13	70	3	1	16	3	1,200	6.0	0	0		620	592	167	360	21:09
7	Erik Gustafsson E. Gustafsson	1	471	45	180	225	-2	153	6	61	0	0	6	2	742	6.1	0	1	0.0	433	473	148	343	18:44
8	Jaccob Slavin J. Slavin	1	685	50	229	279	+158	88	7	21	4	11	7	3	1,197	4.2	0	1	0.0	418	1,137	654	388	22:31
9	Hampus Lindholm H. Lindholm	1	761	73	239	312	+147	441	14	67	1	4	13	3	1,294	5.6	2	8	25.0	698	976	270	646	22:22
10	Rasmus Ristolainen R. Ristolainen	1	734	53	236	289	-187	373	15	102	1	4	7	4	1,380	3.8	1	2	50.0	1,841	1,194	175	396	22:47
11	Nikita Zadorov N. Zadorov	1	664	47	104	151	+12	737	2	7	0	1	5	1	800	5.9	1	1	100.0	1,829	688	187	403	18:08
12	Dougie Hamilton D. Hamilton	1	794	145	333	478	+69	506	44	112	1	2	32	9	2,286	6.3	1	4	25.0	924	871	243	620	20:40
13	Justin Faulk J. Faulk	1	924	127	304	431	-65	458	46	90	3	5	32	4	2,205	5.8	0	1	0.0	1,520	1,252	555	596	23:03
14	Cam Fowler C. Fowler	1	986	96	359	455	-121	259	38	136	4	5	18	4	1,557	6.2	2	3	66.7	475	1,355	331	598	23:13
15	Jared Spurgeon J. Spurgeon	1	881	110	280	390	+123	150	33	91	0	6	20	4	1,460	7.5	1	3	33.3	750	1,516	246	269	22:12
16	Erik Karlsson E. Karlsson	1	1,025	191	638	829	-112	470	43	252	2	5	37	11	2,840	6.7	0	4	0.0	760	1,358	819	1,186	25:20
17	Ryan Suter R. Suter	1	1,466	106	579	685	+114	775	36	218	4	12	20	2	2,386	4.4	2	5	40.0	1,176	1,963	537	715	24:19