The 2023-24 defensemen for the Maple Leafs included Simon Benoit, TJ Brodie, Noah Chadwick, Nolan Dillingham and Joel Edmundson.

	NO.	NAME	POS	HEIGHT	WEIGHT	DOB	AGE	BIRTHPLACE
1	2	Simon Benoit S. Benoit	D	6'3"	203	9/19/1998	25	Laval, Canada
2	78	TJ Brodie	D	6'2"	187	6/7/1990	33	Chatham, Canada
3	56	Noah Chadwick N. Chadwick	D	6'4"	187	5/10/2005	18	Saskatoon, Canada
4	62	Nolan Dillingham N. Dillingham	D	6'1"	211	6/22/2002	21	Mississauga, Canada
5	20	Joel Edmundson J. Edmundson	D	6'5"	221	6/28/1993	30	Brandon, Canada
6	55	Mark Giordano M. Giordano	D	6'0"	205	10/3/1983	40	Toronto, Canada
7	42	Matthew Hellickson M. Hellickson	D	6'0"	184	3/21/1998	25	Rogers, MN
8	3	John Klingberg J. Klingberg	D	6'3"	190	8/14/1992	31	Gothenburg, Sweden
9	84	Mikko Kokkonen M. Kokkonen	D	6'0"	200	1/18/2001	23	Mikkeli, Finland
10	85	William Lagesson W. Lagesson	D	6'2"	211	2/22/1996	27	Gothenburg, Sweden
11	48	Max Lajoie M. Lajoie	D	6'1"	191	11/5/1997	26	Quebec City, Canada
12	51	Mazden Leslie M. Leslie	D	6'1"	197	4/15/2005	18	Lloydminster, Canada
13	37	Timothy Liljegren T. Liljegren	D	6'1"	192	4/30/1999	24	Kristianstad, Sweden
14	46	Ilya Lyubushkin I. Lyubushkin	D	6'2"	200	4/6/1994	29	Moscow, Russia
15	83	Nicolas Mattinen N. Mattinen	D	6'6"	215	3/5/1998	25	Orleans, Canada
16	22	Jake McCabe J. McCabe	D	6'1"	204	10/12/1993	30	Eau Claire, WI
17	73	Tommy Miller T. Miller	D	6'2"	181	3/6/1999	24	West Bloomfield, MI
18	8	Jake Muzzin J. Muzzin	D	6'3"	227	2/21/1989	34	Woodstock, Canada
19	47	Topi Niemela T. Niemela	D	5'11"	156	3/25/2002	21	Oulu, Finland
20	32	Matt Pietroniro M. Pietroniro	D	6'1"	181	10/20/1998	25	Boise, ID
21	44	Morgan Rielly M. Rielly	D	6'1"	222	3/9/1994	29	Vancouver, Canada
22	83	Marshall Rifai M. Rifai	D	6'0"	185	3/16/1998	25	Beaconsfield, Canada
23	86	Spencer Sova S. Sova	D	6'1"	174	1/10/2004	20	Windsor, Canada
24	25	Conor Timmins C. Timmins	D	6'2"	202	9/18/1998	25	St. Catharines, Canada
25	81	Jonathan Tychonick J. Tychonick	D	6'0"	173	3/3/2000	23	Calgary, Canada