The 2020 Connacht Senior Football Championship was the 121st instalment of the annual Connacht Senior Football Championship organised by Connacht GAA. It is one of the four provincial competitions of the 2020 All-Ireland Senior Football Championship. The winning team (Mayo) received the J. J. Nestor Cup, named after J. J. Nestor of Quinaltagh, County Galway.^[1]

The draw for the Connacht Championship was made on 8 October 2019.^[2]

On 17 March, the GAA confirmed that the opening fixture – due to have taken place at Gaelic Park in The Bronx on 3 May – had been postponed due to the impact of the COVID-19 pandemic on Gaelic games.^[3]

Due to the COVID-19 pandemic, London, New York and Sligo did not compete in the championship.^[4] As a result, Galway advanced to the provincial final without playing a single match for the first time since 1965. Sligo returned for the 2021 championship. London and New York returned for the 2022 championship.

The Connacht semi-final between Galway and Sligo now rescheulded for the 2023 Connacht final. London and New York games rescheduled for 2025 season.

Only 4 teams for the first since 1952.

Teams

The Connacht championship is contested by the five counties in the Irish province of Connacht plus London and New York.

Team	Colours	Sponsor	Manager	Captain	Most recent success
					All-Ireland	Provincial
Galway	Maroon and white	Supermac's	Pádraic Joyce	Shane Walsh[5]	2001	2018
Leitrim	Green and gold	J.P. Clarke's Saloon, New York	Terry Hyland	Wayne McKeon		1994
London*	Green and white
Mayo	Green and red	Intersport Elverys	James Horan	Aidan O'Shea	1951	2015
New York*	Red, white and blue
Roscommon	Blue and yellow	Ballymore	Anthony Cunningham	Enda Smith	1944	2019
Sligo+	Black and white	AbbVie	Paul Taylor	Paddy O'Connor[citation needed]		2007

Due to Covid-19 withdrew teams: + = Back in 2021, * = Back in 2022.

Bracket

Quarter-finals

Semi-finals

Final

Galway

w/o

Sligo

conc

Galway

0-13

Mayo

0-14

Roscommon

0-13

Mayo

2-15

Mayo

1-16

Leitrim

0-10

Quarter-finals

Summary

Div	Team 1	Score	Team 2	Div
3	Leitrim	0-10 - 2-15	Mayo	1

Matches

Galway v New York

1 November 2020 (2020-11-01) Quarter-final	Galway	w/o – conc	New York	New York
				Venue: Gaelic Park

London v Roscommon

1 November 2020 (2020-11-01) Quarter-final	London	scr – w/o	Roscommon	Ruislip
				Venue: McGovern Park

Leitrim v Mayo

1 November 2020 (2020-11-01) Quarter-final	Leitrim	0–10 (10) – (21) 2–15	Mayo	Carrick-on-Shannon
13:15 GMT (UTC+0)		(HT: 0-06 – 1-06)		Venue: Páirc Seán Mac Diarmada
	Pts: K Beirne 5 (5f), C Dolan 1, S Quinn 1, E Sweeney 1, D Flynn 1, D Casey 1.	Report	Gls: C O'Connor 1, T Conroy 1. Pts: C O’Connor 9 (4f, 2 ’45), A O’Shea 2, B Walsh 1, M Runae 1, J Carr 1, C Loftus 1.	Referee: Paul Faloon (Down) Attendance: 0 TV: RTÉ News Now

Semi-finals

Summary

Div	Team 1	Score	Team 2	Div
1	Galway	w/o - conc	Sligo	4
2	Roscommon	0-13 - 1-16	Mayo	1

Matches

Galway v Sligo

7 November 2020 (2020-11-07) Semi-final	Galway	w/o – conc	Sligo	Galway
				Venue: Pearse Stadium

Roscommon v Mayo

8 November 2020 (2020-11-08) Semi-final	Roscommon	0–13 (13) – (19) 1–16	Mayo	Roscommon
13:30 GMT (UTC±0)		(HT: 0-05 – 1-08)		Venue: Dr Hyde Park
	Pts: C Cox 2 (1m, 1f), C McKeon 2 (2f), D Smith 3 (1f); D Murtagh 2; N Daly 1, T O'Rourke 1.	Report	Gls: D O’Connor 1 Pts: C O'Connor 9 (6f); P Durcan 2; A O'Shea 1, T Conroy 1, K McLoughlin 1, C Loftus 1, D O'Connor 1.	Referee: David Gough (Meath) Attendance: 0 TV: RTÉ

Final

Galway v Mayo

RTÉ

15 November 2020 (2020-11-15) 13:30 GMT (UTC+0) Final

Report

Galway	0-13 (13) – (14) 0-14	Mayo
(HT: 0-05 - 0-08)
Pts: S Walsh 7 (4f), P Conroy 3, D Conneely 1, P Kelly 1, G O’Donnell 1.		Pts: C O’Connor 4 (2f), T Conroy 3, M Ruane 2, B Walsh 2, P Durcan 1, D O’Connor 1, R O’Donoghue 1.

Pearse Stadium, Galway Referee: Sean Hurson (Tyrone) Attendance: 0