The 2020–21 Arizona State Sun Devils men's ice hockey season was the 6th season of play for the program at the Division I level. The Sun Devils represented Arizona State University and were coached by Greg Powers, in his 11th season.

Due to the COVID-19 pandemic, the start of the Sun Devils' season was delayed. Due to scheduling problems resulting from the pandemic, Arizona State entered into a scheduling alliance with the Big Ten and would play a conference schedule. The Sun Devils would only participate in regular season games against Big Ten teams, the program would not formally join the conference nor would any of its games be counted in the Big Ten standings. Arizona State would also not be eligible for the Big Ten Tournament.^[1]

Due to the nature of their agreement, Arizona State played all of its games on the road. That, and playing against stronger competition that previous years, led to the Sun Devils' facing an uphill battle in their pursuit of a second NCAA berth. In ASU's first series of the season they were swept by Michigan but were dealt a serious blow when senior captain and all-time leading goal scorer, Johnny Walker, suffered a knee injury that would keep him out for 6 weeks.^[2] After another offensively inept series, the Sun Devils suddenly came to life against Wisconsin, taking both games and jumping back into the USCHO rankings.

The team played well in Walker's absence, ending the year with a 4–6–2 record, but when their captain returned the team was in the middle of a string of ranked opponents. For the entire month of January, Arizona State played top-20 teams. When the dust settled, ASU's record had plummeted and the team had virtually no chance of making the national tournament. The team played well over the final three weeks of the season but they couldn't recover from a disastrous 1–7 run.

As of January 3, 2021.^[3]

More information No., S/P/C ...

No.	S/P/C	Player	Class	Pos	Height	Weight	DoB	Hometown	Previous team	NHL rights
2		Connor Stuart	Junior	D	6' 2" (1.88 m)	190 lb (86 kg)	1997-02-12	Phoenix, Arizona	Lone Star (NAHL)	—
3		Gvido Jansons	Senior	D	6' 4" (1.93 m)	210 lb (95 kg)	1997-01-09	Grobiņa, Latvia	Aston (NAHL)	—
4		Jacob Wilson (C)	Senior	D	5' 11" (1.8 m)	185 lb (84 kg)	1997-02-27	Ballwin, Missouri	Sioux City (USHL)	—
7		Johnny Walker (C)	Senior	F	6' 1" (1.85 m)	185 lb (84 kg)	1996-08-21	Phoenix, Arizona	Chicago (USHL)	—
8		Tanner Hickey	Sophomore	D	5' 10" (1.78 m)	170 lb (77 kg)	1999-04-30	Leduc, Alberta	Alabama Huntsville (WCHA)	—
9		Sean Dhooghe	Senior	F	5' 3" (1.6 m)	150 lb (68 kg)	1999-03-09	Aurora, Illinois	Wisconsin (Big Ten)	—
10		Michael Mancinelli	Freshman	F	5' 9" (1.75 m)	185 lb (84 kg)	2001-06-28	Northville, Michigan	Des Moines (USHL)	—
11		Benji Eckerle	Freshman	F	5' 9" (1.75 m)	175 lb (79 kg)	1999-09-24	Northville, Michigan	Tri-City (USHL)	—
13		Chris Grando	Junior (RS)	F	5' 10" (1.78 m)	171 lb (78 kg)	1998-08-22	Islip, New York	Boston College (HEA)	—
15		Carson Kosobud	Freshman	D	6' 0" (1.83 m)	190 lb (86 kg)	1999-06-04	Moorhead, Minnesota	Penticton (BCHL)	—
17		Jacob Semik	Sophomore	D	6' 0" (1.83 m)	180 lb (82 kg)	2000-03-10	Canton, Michigan	Dubuque (USHL)	—
18		Jax Murray	Sophomore	F	5' 9" (1.75 m)	185 lb (84 kg)	1998-12-26	Princeton, Minnesota	Fairbanks (NAHL)	—
19		Jordan Sandhu (A)	Junior	F	5' 7" (1.7 m)	155 lb (70 kg)	1999-05-13	Richmond, British Columbia	Vernon (BCHL)	—
20		Filips Buncis	Senior	F	6' 4" (1.93 m)	220 lb (100 kg)	1997-06-12	Jelgava, Latvia	Johnstown (NAHL)	—
21		Peter Zhong	Sophomore (RS)	F	5' 11" (1.8 m)	175 lb (79 kg)	1998-07-30	Beijing, China	Philadelphia Rebels (NAHL)	—
22		Jack Judson	Sophomore	D	6' 0" (1.83 m)	180 lb (82 kg)	2000-02-26	White Rock, British Columbia	Vernon (BCHL)	—
23		Demetrios Koumontzis	Junior	F	5' 10" (1.78 m)	183 lb (83 kg)	2000-03-24	Scottsdale, Arizona	Edina (USHS–MN)	CGY, 108th overall 2018
25		P. J. Marrocco	Junior	F	5' 8" (1.73 m)	170 lb (77 kg)	1997-08-27	Edmonton, Alberta	Chilliwack (BCHL)	—
28		Matthew Kopperud	Freshman	F	5' 11" (1.8 m)	170 lb (77 kg)	1999-08-04	Denver, Colorado	Dubuque (USHL)	—
29		William Knierim	Senior	F	6' 4" (1.93 m)	225 lb (102 kg)	1998-01-22	Skokie, Illinois	Dubuque (USHL)	—
30		Evan DeBrouwer	Junior	G	6' 3" (1.91 m)	190 lb (86 kg)	1997-01-30	Blenheim, Ontario	Prince George (BCHL)	—
31		Justin Robbins	Sophomore	G	5' 9" (1.75 m)	158 lb (72 kg)	1999-03-10	Alpine, New Jersey	Chicago (USHL)	—
33		Bronson Moore	Junior	G	5' 11" (1.8 m)	161 lb (73 kg)	1997-11-004	Kennewick, Washington	Minnesota (USPHL)	—
34		Cole Brady	Freshman	G	6' 5" (1.96 m)	180 lb (82 kg)	2001-02-12	Pickering, Ontario	Fargo (USHL)	NJD, 127th overall 2019
37		Dominic Garcia (A)	Senior	F	5' 11" (1.8 m)	204 lb (93 kg)	1996-10-30	Las Vegas, Nevada	Aston (NAHL)	—
39		Ryan O'Reilly	Freshman	F	6' 3" (1.91 m)	205 lb (93 kg)	2000-03-21	Southlake, Texas	Green Bay (USHL)	DET, 98th overall 2018
60		Jarrod Gourley	Junior	D	6' 2" (1.88 m)	212 lb (96 kg)	1999-06-29	Calgary, Alberta	Spruce Grove (AJHL)	—
61		James Sanchez	Senior	F	6' 2" (1.88 m)	195 lb (88 kg)	1998-02-25	Northbrook, Illinois	Dubuque (USHL)	—

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USCHO did not release a poll in week 20.^[6]