The 2020-21 roster for the Bruins included Patrice Bergeron at center, Brad Marchand at left wing, David Pastrnak at right wing, Charlie McAvoy at defenseman and Tuukka Rask at goalie.

	NO.	NAME	POS	HEIGHT	WEIGHT	DOB	AGE	BIRTHPLACE
1	54	Jack Ahcan J. Ahcan	D	5'8"	185	5/18/1997	23	Savage, MN
2	37	Patrice Bergeron P. Bergeron	C	6'1"	195	7/24/1985	35	Ancienne-Lorette, Canada
3	10	Anders Bjork A. Bjork	LW	6'0"	190	8/5/1996	24	Mequon, WI
4	81	Anton Blidh A. Blidh	LW	6'0"	201	3/14/1995	25	Molnlycke, Sweden
5	70	Callum Booth C. Booth	G	6'4"	184	5/21/1997	23	Montreal, Canada
6	25	Brandon Carlo B. Carlo	D	6'5"	212	11/26/1996	24	Colorado Springs, CO
7	75	Connor Clifton C. Clifton	D	5'11"	175	4/28/1995	25	Matawan, NJ
8	13	Charlie Coyle C. Coyle	C	6'3"	220	3/2/1992	28	East Weymouth, MA
9	74	Jake DeBrusk J. DeBrusk	LW	6'0"	188	10/17/1996	24	Edmonton, Canada
10	11	Trent Frederic T. Frederic	C	6'2"	203	2/11/1998	22	St. Louis, MO
11	48	Matt Grzelcyk M. Grzelcyk	D	5'9"	174	1/5/1994	27	Charlestown, MA
12	41	Jaroslav Halak J. Halak	G	5'11"	185	5/13/1985	35	Bratislava, Slovakia
13	71	Taylor Hall T. Hall	LW	6'1"	205	11/14/1991	29	Calgary, Canada
14	53	Cameron Hughes C. Hughes	C	5'11"	160	10/9/1996	24	Edmonton, Canada
15	44	Steven Kampfer S. Kampfer	D	5'11"	198	9/24/1988	32	Ann Arbor, MI
16	28	Ondrej Kase O. Kase	RW	6'0"	190	11/8/1995	25	Kadan, Czech Republic
17	46	David Krejci D. Krejci	C	6'0"	188	4/28/1986	34	Sternberk, Czech Republic
18	83	Karson Kuhlman K. Kuhlman	RW	5'11"	185	9/26/1995	25	Esko, MN
19	52	Sean Kuraly S. Kuraly	C	6'2"	213	1/20/1993	28	Niagara Falls, NY
20	55	Jeremy Lauzon J. Lauzon	D	6'1"	204	4/28/1997	23	Val-d'Or, Canada
21	20	Curtis Lazar C. Lazar	C	6'0"	211	2/2/1995	25	Salmon Arm, Canada
22	26	Par Lindholm P. Lindholm	C	6'0"	183	10/5/1991	29	Kusmark, Sweden
23	63	Brad Marchand B. Marchand	LW	5'9"	181	5/11/1988	32	Halifax, Canada
24	73	Charlie McAvoy C. McAvoy	D	6'0"	208	12/21/1997	23	Long Beach, NY
25	18	Greg McKegg G. McKegg	C	6'0"	192	6/17/1992	28	St. Thomas, Canada