15 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	315	86	250	336	+108	96	29	115	1	3	20	5	872	9.9	0	0		290	419	235	191	24:33
3	Jakob Chychrun J. Chychrun	1	467	76	140	216	-69	308	28	33	0	0	10	2	1,119	6.8	0	0		569	735	157	354	21:18
4	MacKenzie Weegar M. Weegar	1	469	51	153	204	+95	353	4	21	1	6	9	1	889	5.7	1	1	100.0	991	800	287	424	20:24
5	Zach Werenski Z. Werenski	1	486	90	212	302	-8	115	20	72	1	1	12	5	1,288	7.0	0	0		284	617	229	268	23:24
6	Erik Gustafsson E. Gustafsson	1	455	45	177	222	+4	143	6	58	0	0	6	2	719	6.3	0	1	0.0	426	460	145	316	18:49
7	Jaccob Slavin J. Slavin	1	665	49	223	272	+151	86	7	21	4	11	7	3	1,176	4.2	0	1	0.0	412	1,105	638	373	22:33
8	Hampus Lindholm H. Lindholm	1	744	70	235	305	+151	437	14	66	1	4	12	3	1,259	5.6	2	8	25.0	693	959	256	616	22:24
9	Rasmus Ristolainen R. Ristolainen	1	713	52	233	285	-182	369	15	102	1	4	6	4	1,355	3.8	1	2	50.0	1,803	1,160	167	373	22:50
10	Nikita Zadorov N. Zadorov	1	642	47	99	146	+12	691	2	7	0	1	5	1	772	6.1	1	1	100.0	1,767	666	183	373	18:05
11	Dougie Hamilton D. Hamilton	1	771	142	319	461	+68	494	42	106	1	2	30	9	2,209	6.4	1	4	25.0	900	839	235	582	20:40
12	Justin Faulk J. Faulk	1	902	126	300	426	-57	448	46	88	3	5	32	4	2,163	5.8	0	1	0.0	1,490	1,216	546	569	23:02
13	Cam Fowler C. Fowler	1	974	96	357	453	-122	255	38	136	4	5	18	4	1,547	6.2	2	3	66.7	473	1,335	330	588	23:15
14	Jared Spurgeon J. Spurgeon	1	867	110	274	384	+117	146	33	90	0	6	20	4	1,436	7.7	1	3	33.3	739	1,490	242	259	22:14
15	Erik Karlsson E. Karlsson	1	1,002	189	628	817	-99	466	42	248	2	5	37	11	2,783	6.8	0	4	0.0	751	1,333	807	1,143	25:23