The 2023-24 defensemen for the Panthers included Marek Alscher, Uvis Balinskis, Mike Benning, Tobias Bjornfot and Lucas Carlsson.

	NO.	NAME	POS	HEIGHT	WEIGHT	DOB	AGE	BIRTHPLACE
1	51	Marek Alscher M. Alscher	D	6'3"	196	4/7/2004	19	Kladno, Czech Republic
2	26	Uvis Balinskis U. Balinskis	D	6'0"	196	8/1/1996	27	Ventspils, Latvia
3	44	Mike Benning M. Benning	D	5'9"	177	1/5/2002	22	Edmonton, Canada
4	2	Tobias Bjornfot T. Bjornfot	D	6'0"	200	4/6/2001	22	Upplands Vasby, Sweden
5	32	Lucas Carlsson L. Carlsson	D	6'0"	189	7/5/1997	26	Gavle, Sweden
6	65	Luke Coughlin L. Coughlin	D	5'10"	170	4/11/2005	18	Charlottetown, Canada
7	5	Aaron Ekblad A. Ekblad	D	6'4"	215	2/7/1996	27	Windsor, Canada
8	91	Oliver Ekman-Larsson O. Ekman-Larsson	D	6'2"	200	7/17/1991	32	Karlskrona, Sweden
9	4	Casey Fitzgerald C. Fitzgerald	D	5'11"	188	2/25/1997	26	North Reading, MA
10	42	Gustav Forsling G. Forsling	D	6'0"	186	6/12/1996	27	Linkoping, Sweden
11	3	Matt Kiersted M. Kiersted	D	6'0"	181	4/14/1998	25	Elk River, MN
12	75	Santtu Kinnunen S. Kinnunen	D	6'3"	154	3/25/1999	24	Lahti, Finland
13	7	Dmitry Kulikov D. Kulikov	D	6'1"	201	10/29/1990	33	Lipetsk, Russia
14	28	Josh Mahura J. Mahura	D	6'0"	185	5/5/1998	25	St. Albert, Canada
15	77	Niko Mikkola N. Mikkola	D	6'4"	209	4/27/1996	27	Kiiminki, Finland
16	62	Brandon Montour B. Montour	D	6'0"	194	4/11/1994	29	Brantford, Canada
17	52	Evan Nause E. Nause	D	6'2"	176	1/20/2003	21	White Rock, Canada
18	6	Mike Reilly M. Reilly	D	6'1"	196	7/13/1993	30	Glenview, IL
19	79	Calle Sjalin C. Sjalin	D	6'1"	176	9/2/1999	24	Ostersund, Sweden
20	47	Zachary Uens Z. Uens	D	6'1"	175	5/13/2001	22	Belleville, Canada
21		Albert Wikman A. Wikman	D	6'1"	191	3/10/2005	18	Arvika, Sweden