Aiden O'Brien
| Date of birth | 04 October 1993 |
| Place of birth | Islington, England |
| Nationality | Irish |
| Weight | 69 kg |
| Height | 1.73 m |
| Position | Forward |
Aiden O'Brien's contract at Millwall was extended to June 2016 in April 2014, to June 2017 in June 2016 and to June 2019 in January 2016.
Club history
| Team | Joined | Left | Loan / Trialist |
|---|---|---|---|
| Millwall | 01 Jul 2011 | ||
| Staines Town | 01 Jan 2012 | 01 Feb 2012 | L |
| Hayes and Yeading United | 09 Mar 2012 | 09 Apr 2012 | L |
| Crawley Town | 13 Feb 2013 | 17 May 2013 | L |
| Aldershot Town | 26 Nov 2013 | 05 Jan 2014 | L |
| Torquay United | 29 Jan 2014 | 28 Feb 2014 | L |
Club stats
| Season | Team | Competition | Apps | Subs | Goals | Y | R |
|---|---|---|---|---|---|---|---|
| 2011-12 | Millwall | League Cup | 1 |
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| 2012-13 | Crawley Town | League One | 9 |
1
|
|||
| 2013-14 | Torquay United | League Two | 3 |
||||
| 2014-15 | Millwall | League Championship | 13 | 6 |
2 |
||
| 2014-15 | Millwall | League Cup | 1 |
||||
| 2015-16 | Millwall | FA Cup | 1 | 1 |
1 |
||
| 2015-16 | Millwall | Johnstones Paint Trophy | 5 | 1 |
2 |
||
| 2015-16 | Millwall | League One | 31 | 12 |
10 |
6
|
|
| 2015-16 | Millwall | League One Play-Offs | 2 |
||||
| 2016-17 | Millwall | FA Cup | 5 | 1 |
1 |
||
| 2016-17 | Millwall | Football League Trophy | 3 | ||||
| 2016-17 | Millwall | League Cup | 2 | 1 |
|||
| 2016-17 | Millwall | League One | 35 | 8 |
13 |
1
|
|
| 2016-17 | Millwall | League One Play-Offs | 2 | 1 |
1
|
||
| 2017-18 | Millwall | FA Cup | 1 | 2 |
|||
| 2017-18 | Millwall | League Championship | 23 | 7 |
4 |
1
|
1
|
| 2017-18 | Millwall | League Cup | 1 |
Please note: Career stats are based on performances in the Premier and Football Leagues and (in most cases all) internationals.
Club matches
| Date | Match | Result | Competition | Round | |
|---|---|---|---|---|---|
| 20 Sep 2011 | Wolverhampton Wanderers v Millwall | L | 5-0 | League Cup | 3rd round |
| 26 Aug 2014 | Millwall v Southampton | L | 0-2 | League Cup | 2nd round |
| 30 Sep 2014 | Millwall v Birmingham City | L | 1-3 | League Championship | |
| 04 Oct 2014 | Derby County v Millwall | D | 0-0 | League Championship | |
| 18 Oct 2014 | Millwall v Wolverhampton Wanderers | D | 3-3 | League Championship | |
| 01 Nov 2014 | Watford v Millwall | L | 3-1 | League Championship | |
| 21 Feb 2015 | Millwall v Fulham | D | 0-0 | League Championship | |
| 24 Feb 2015 | Millwall v Sheffield Wednesday | L | 1-3 | League Championship | |
| 28 Feb 2015 | Rotherham United v Millwall | L | 2-1 | League Championship | |
| 03 Mar 2015 | Middlesbrough v Millwall | L | 3-0 | League Championship | |
| 07 Mar 2015 | Millwall v Norwich City | L | 1-4 | League Championship | |
| 14 Mar 2015 | Bolton Wanderers v Millwall | L | 2-0 | League Championship | |
| 17 Mar 2015 | Millwall v Brighton and Hove Albion | D | 0-0 | League Championship | |
| 21 Mar 2015 | Brentford v Millwall | D | 2-2 | League Championship | |
| 03 Apr 2015 | Millwall v Charlton Athletic | W | 2-1 | League Championship | |
| 11 Apr 2015 | Millwall v Watford | L | 0-2 | League Championship | |
| 14 Apr 2015 | Millwall v Wigan Athletic | W | 2-0 | League Championship | |
| 18 Apr 2015 | Cardiff City v Millwall | D | 0-0 | League Championship | |
| 21 Apr 2015 | Blackburn Rovers v Millwall | L | 2-0 | League Championship | |
| 25 Apr 2015 | Millwall v Derby County | D | 3-3 | League Championship | |
| 02 May 2015 | Wolverhampton Wanderers v Millwall | L | 4-2 | League Championship | |
| 18 Aug 2015 | Millwall v Barnsley | L | 2-3 | League One | |
| 22 Aug 2015 | Scunthorpe United v Millwall | D | 0-0 | League One | |
| 29 Aug 2015 | Millwall v Chesterfield | L | 0-2 | League One | |
| 01 Sep 2015 | Millwall v Peterborough United | W | 1-0 | Johnstones Paint Trophy | 1st round - southern section |
| 12 Sep 2015 | Crewe Alexandra v Millwall | W | 1-3 | League One | |
| 15 Sep 2015 | Port Vale v Millwall | W | 0-2 | League One | |
| 19 Sep 2015 | Millwall v Southend United | L | 0-2 | League One | |
| 26 Sep 2015 | Millwall v Rochdale | W | 3-1 | League One | |
| 29 Sep 2015 | Wigan Athletic v Millwall | D | 2-2 | League One | |
| 03 Oct 2015 | Peterborough United v Millwall | L | 5-3 | League One | |
| 06 Oct 2015 | Millwall v Northampton Town | W | 2-0 | Johnstones Paint Trophy | 2nd round - southern section |
| 17 Oct 2015 | Millwall v Swindon Town | W | 2-0 | League One | |
| 20 Oct 2015 | Blackpool v Millwall | D | 1-1 | League One | |
| 24 Oct 2015 | Sheffield United v Millwall | W | 1-2 | League One | |
| 27 Oct 2015 | Millwall v Doncaster Rovers | W | 2-0 | League One | |
| 31 Oct 2015 | Millwall v Bradford City | D | 0-0 | League One | |
| 07 Nov 2015 | Millwall v AFC Fylde | W | 3-1 | FA Cup | 1st round |
| 10 Nov 2015 | Plymouth Argyle v Millwall | W | 3-5 | Johnstones Paint Trophy | Quarter-final - southern section |
| 21 Nov 2015 | Millwall v Colchester United | W | 4-1 | League One | |
| 24 Nov 2015 | Fleetwood Town v Millwall | L | 2-1 | League One | |
| 28 Nov 2015 | Millwall v Bury | W | 1-0 | League One | |
| 01 Dec 2015 | Burton Albion v Millwall | L | 2-1 | League One | |
| 05 Dec 2015 | Millwall v Wycombe Wanderers | L | 1-2 | FA Cup | 2nd round |
| 08 Dec 2015 | Southend United v Millwall | W | 0-2 | Johnstones Paint Trophy | Semi-final - southern section |
| 19 Dec 2015 | Millwall v Gillingham | L | 0-3 | League One | |
| 26 Dec 2015 | Millwall v Walsall | L | 0-1 | League One | |
| 28 Dec 2015 | Southend United v Millwall | W | 0-4 | League One | |
| 02 Jan 2016 | Barnsley v Millwall | L | 2-1 | League One | |
| 09 Jan 2016 | Oldham Athletic v Millwall | W | 1-2 | League One | |
| 14 Jan 2016 | Millwall v Oxford United | L | 0-2 | Johnstones Paint Trophy | Final - southern section (1st leg) |
| 17 Jan 2016 | Millwall v Port Vale | W | 3-1 | League One | |
| 23 Jan 2016 | Chesterfield v Millwall | W | 1-2 | League One | |
| 30 Jan 2016 | Millwall v Crewe Alexandra | D | 1-1 | League One | |
| 02 Feb 2016 | Oxford United v Millwall | W | 0-1 | Johnstones Paint Trophy | Final - southern section (2nd leg) |
| 06 Feb 2016 | Walsall v Millwall | W | 0-3 | League One | |
| 16 Feb 2016 | Millwall v Scunthorpe United | L | 0-2 | League One | |
| 20 Feb 2016 | Millwall v Peterborough United | W | 3-0 | League One | |
| 27 Feb 2016 | Doncaster Rovers v Millwall | D | 1-1 | League One | |
| 01 Mar 2016 | Millwall v Wigan Athletic | D | 0-0 | League One | |
| 05 Mar 2016 | Millwall v Blackpool | W | 3-0 | League One | |
| 12 Mar 2016 | Swindon Town v Millwall | D | 2-2 | League One | |
| 19 Mar 2016 | Millwall v Sheffield United | W | 1-0 | League One | |
| 26 Mar 2016 | Bradford City v Millwall | L | 1-0 | League One | |
| 28 Mar 2016 | Millwall v Burton Albion | W | 2-0 | League One | |
| 02 Apr 2016 | Colchester United v Millwall | D | 0-0 | League One | |
| 09 Apr 2016 | Millwall v Shrewsbury Town | W | 3-1 | League One | |
| 16 Apr 2016 | Coventry City v Millwall | L | 2-1 | League One | |
| 19 Apr 2016 | Millwall v Fleetwood Town | W | 1-0 | League One | |
| 23 Apr 2016 | Bury v Millwall | W | 1-3 | League One | |
| 30 Apr 2016 | Millwall v Oldham Athletic | W | 3-0 | League One | |
| 08 May 2016 | Gillingham v Millwall | W | 1-2 | League One | |
| 15 May 2016 | Bradford City v Millwall | W | 1-3 | League One Play-Offs | Semi-final 1st leg |
| 29 May 2016 | Barnsley v Millwall | L | 3-1 | League One Play-Offs | Final |
| 06 Aug 2016 | Millwall v Oldham Athletic | W | 3-0 | League One | |
| 09 Aug 2016 | Barnet v Millwall | W | 0-4 | League Cup | 1st round |
| 13 Aug 2016 | Milton Keynes Dons v Millwall | D | 2-2 | League One | |
| 16 Aug 2016 | Peterborough United v Millwall | L | 5-1 | League One | |
| 20 Aug 2016 | Millwall v Sheffield United | W | 2-1 | League One | |
| 23 Aug 2016 | Millwall v Nottingham Forest | L | 1-2 | League Cup | 2nd round |
| 27 Aug 2016 | Chesterfield v Millwall | W | 1-3 | League One | |
| 30 Aug 2016 | Millwall v West Bromwich Albion | W | 2-0 | Football League Trophy | Group H – South |
| 03 Sep 2016 | Millwall v Bradford City | D | 1-1 | League One | |
| 10 Sep 2016 | Millwall v Coventry City | D | 1-1 | League One | |
| 17 Sep 2016 | Southend United v Millwall | L | 3-1 | League One | |
| 24 Sep 2016 | Millwall v Rochdale | L | 2-3 | League One | |
| 18 Oct 2016 | Millwall v Bolton Wanderers | L | 0-2 | League One | |
| 22 Oct 2016 | Millwall v Fleetwood Town | W | 2-1 | League One | |
| 29 Oct 2016 | Oxford United v Millwall | W | 1-2 | League One | |
| 04 Nov 2016 | Millwall v Southend United | W | 1-0 | FA Cup | 1st round |
| 08 Nov 2016 | Luton Town v Millwall | W | 1-3 | Football League Trophy | Group H – South |
| 12 Nov 2016 | Millwall v Bristol Rovers | W | 4-0 | League One | |
| 19 Nov 2016 | Bolton Wanderers v Millwall | L | 2-0 | League One | |
| 22 Nov 2016 | Millwall v AFC Wimbledon | D | 0-0 | League One | |
| 26 Nov 2016 | Bury v Millwall | W | 2-3 | League One | |
| 04 Dec 2016 | Millwall v Braintree Town | W | 5-2 | FA Cup | 2nd round |
| 07 Dec 2016 | Millwall v Wycombe Wanderers | L | 1-3 | Football League Trophy | 2nd round - southern section |
| 10 Dec 2016 | Millwall v Shrewsbury Town | L | 0-1 | League One | |
| 17 Dec 2016 | Scunthorpe United v Millwall | L | 3-0 | League One | |
| 21 Dec 2016 | Millwall v Charlton Athletic | W | 3-1 | League One | |
| 26 Dec 2016 | Millwall v Swindon Town | W | 2-0 | League One | |
| 30 Dec 2016 | Millwall v Gillingham | W | 2-1 | League One | |
| 02 Jan 2017 | AFC Wimbledon v Millwall | D | 2-2 | League One | |
| 07 Jan 2017 | Millwall v AFC Bournemouth | W | 3-0 | FA Cup | 3rd round |
| 14 Jan 2017 | Charlton Athletic v Millwall | D | 0-0 | League One | |
| 21 Jan 2017 | Bradford City v Millwall | D | 1-1 | League One | |
| 29 Jan 2017 | Millwall v Watford | W | 1-0 | FA Cup | 4th round |
| 01 Feb 2017 | Millwall v Walsall | D | 0-0 | League One | |
| 04 Feb 2017 | Coventry City v Millwall | W | 0-2 | League One | |
| 11 Feb 2017 | Millwall v Southend United | W | 1-0 | League One | |
| 14 Feb 2017 | Millwall v Port Vale | W | 2-0 | League One | |
| 18 Feb 2017 | Millwall v Leicester City | W | 1-0 | FA Cup | 5th round |
| 21 Feb 2017 | Millwall v Chesterfield | D | 0-0 | League One | |
| 25 Feb 2017 | Oldham Athletic v Millwall | D | 0-0 | League One | |
| 28 Feb 2017 | Millwall v Peterborough United | W | 1-0 | League One | |
| 04 Mar 2017 | Millwall v Milton Keynes Dons | W | 2-1 | League One | |
| 12 Mar 2017 | Tottenham Hotspur v Millwall | L | 6-0 | FA Cup | Quarter-final |
| 18 Mar 2017 | Millwall v Bury | D | 0-0 | League One | |
| 21 Mar 2017 | Rochdale v Millwall | D | 3-3 | League One | |
| 25 Mar 2017 | Swindon Town v Millwall | L | 1-0 | League One | |
| 28 Mar 2017 | Sheffield United v Millwall | L | 2-0 | League One | |
| 01 Apr 2017 | Millwall v Scunthorpe United | W | 3-1 | League One | |
| 04 Apr 2017 | Shrewsbury Town v Millwall | W | 1-2 | League One | |
| 08 Apr 2017 | Gillingham v Millwall | D | 1-1 | League One | |
| 14 Apr 2017 | Millwall v Northampton Town | W | 3-0 | League One | |
| 17 Apr 2017 | Fleetwood Town v Millwall | L | 1-0 | League One | |
| 22 Apr 2017 | Millwall v Oxford United | L | 0-3 | League One | |
| 30 Apr 2017 | Bristol Rovers v Millwall | W | 3-4 | League One | |
| 04 May 2017 | Millwall v Scunthorpe United | D | 0-0 | League One Play-Offs | Semi-final 1st leg |
| 07 May 2017 | Scunthorpe United v Millwall | W | 2-3 | League One Play-Offs | Semi-final 2nd leg |
| 20 May 2017 | Bradford City v Millwall | W | 0-1 | League One Play-Offs | Final |
| 04 Aug 2017 | Nottingham Forest v Millwall | L | 1-0 | League Championship | |
| 15 Aug 2017 | Millwall v Ipswich Town | L | 3-4 | League Championship | |
| 19 Aug 2017 | Bristol City v Millwall | D | 0-0 | League Championship | |
| 22 Aug 2017 | Reading v Millwall | L | 3-1 | League Cup | 2nd round |
| 26 Aug 2017 | Millwall v Norwich City | W | 4-0 | League Championship | |
| 09 Sep 2017 | Wolverhampton Wanderers v Millwall | L | 1-0 | League Championship | |
| 16 Sep 2017 | Millwall v Leeds United | W | 1-0 | League Championship | |
| 23 Sep 2017 | Preston North End v Millwall | D | 0-0 | League Championship | |
| 26 Sep 2017 | Millwall v Reading | W | 2-1 | League Championship | |
| 30 Sep 2017 | Millwall v Barnsley | L | 1-3 | League Championship | |
| 14 Oct 2017 | Brentford v Millwall | L | 1-0 | League Championship | |
| 21 Oct 2017 | Millwall v Birmingham City | W | 2-0 | League Championship | |
| 28 Oct 2017 | Cardiff City v Millwall | D | 0-0 | League Championship | |
| 31 Oct 2017 | Sheffield Wednesday v Millwall | L | 2-1 | League Championship | |
| 04 Nov 2017 | Millwall v Burton Albion | L | 0-1 | League Championship | |
| 18 Nov 2017 | Sunderland v Millwall | D | 2-2 | League Championship | |
| 21 Nov 2017 | Millwall v Hull City | D | 0-0 | League Championship | |
| 25 Nov 2017 | Fulham v Millwall | L | 1-0 | League Championship | |
| 02 Dec 2017 | Millwall v Sheffield United | W | 3-1 | League Championship | |
| 09 Dec 2017 | Aston Villa v Millwall | D | 0-0 | League Championship | |
| 16 Dec 2017 | Millwall v Middlesbrough | W | 2-1 | League Championship | |
| 23 Dec 2017 | Derby County v Millwall | L | 3-0 | League Championship | |
| 26 Dec 2017 | Millwall v Wolverhampton Wanderers | D | 2-2 | League Championship | |
| 29 Dec 2017 | Millwall v Queens Park Rangers | W | 1-0 | League Championship | |
| 01 Jan 2018 | Norwich City v Millwall | L | 2-1 | League Championship | |
| 06 Jan 2018 | Millwall v Barnsley | W | 4-1 | FA Cup | 3rd round |
| 13 Jan 2018 | Millwall v Preston North End | D | 1-1 | League Championship | |
| 20 Jan 2018 | Leeds United v Millwall | W | 3-4 | League Championship | |
| 30 Mar 2018 | Millwall v Nottingham Forest | W | 2-0 | League Championship | |
| 02 Apr 2018 | Ipswich Town v Millwall | D | 2-2 | League Championship | |
| 20 Apr 2018 | Millwall v Fulham | L | 0-3 | League Championship | |
| 06 May 2018 | Millwall v Aston Villa | W | 1-0 | League Championship | |
Please note: Match history is complete for the Premier and Football Leagues and (in most cases all) internationals.
International stats
| Season | Team | Competition | Apps | Subs | Goals | Y | R |
|---|---|---|---|---|---|---|---|
| 2018-19 | Republic of Ireland | International Friendly | 1 | 1 |
|||
| 2018-19 | Republic of Ireland | UEFA European Championship | 1 |
||||
| 2018-19 | Republic of Ireland | UEFA Nations League | 2 | 1 |
Please note: Career stats are based on performances in the Premier and Football Leagues and (in most cases all) internationals.
International matches
| Date | Match | Result | Competition | Round | |
|---|---|---|---|---|---|
| 11 Sep 2018 | Poland v Republic of Ireland | D | 1-1 | International Friendly | |
| 13 Oct 2018 | Republic of Ireland v Denmark | D | 0-0 | UEFA Nations League | League B Group B4 |
| 16 Oct 2018 | Republic of Ireland v Wales | L | 0-1 | UEFA Nations League | League B Group B4 |
| 19 Nov 2018 | Denmark v Republic of Ireland | D | 0-0 | UEFA Nations League | League B Group B4 |
| 26 Mar 2019 | Republic of Ireland v Georgia | W | 1-0 | UEFA European Championship | Qualifying group D |
Please note: Match history is complete for the Premier and Football Leagues and (in most cases all) internationals.