| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2023/2024 | Ilioupoli | Super League 2 | 11 | 1 | 0 | 1 | 0 | – |
| 2022/2023 | Kerala Blasters | Indian Super League | 17 | 2 | 2 | 0 | 0 | 6.8 |
| 2021/2022 | Macarthur | A-League Men | 20 | 3 | 0 | 4 | 0 | 6.8 |
| 2021/2022 | OFI | Super League 1 | 2 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | OFI | Super League 1 | 15 | 0 | 0 | 0 | 0 | – |
| 2019/2020 | AEK Larnaca | 1. Division | 19 | 1 | 0 | 2 | 0 | – |
| 2018/2019 | AEK Larnaca | 1. Division | 24 | 4 | 0 | 5 | 0 | – |
| 2017/2018 | AEK Larnaca | 1. Division | 11 | 2 | 0 | 1 | 0 | – |
| 2017 | Guangzhou City | Chinese Super League | 7 | 2 | 1 | 0 | 0 | 7.0 |
| 2016 | Guangzhou City | Chinese Super League | 22 | 5 | 1 | 2 | 0 | 6.8 |
| 2015/2016 | Asteras Tripolis | Super League 1 | 21 | 13 | 0 | 4 | 0 | – |
| 2014/2015 | Panionios | Super League 1 | 32 | 10 | 0 | 1 | 0 | – |
| 2013/2014 | Panionios | Super League 1 | 28 | 3 | 0 | 1 | 0 | – |
| 2013/2014 | PAOK | Super League 1 | 0 | 0 | 0 | 0 | 0 | – |
| 2012/2013 | Platanias | Super League 1 | 9 | 1 | 0 | 0 | 0 | – |
| 2012/2013 | PAOK | Super League 1 | 11 | 1 | 0 | 1 | 0 | – |
| 2011/2012 | PAOK | Super League 1 | 15 | 2 | 0 | 2 | 0 | – |
| 2010/2011 | Kavala | Super League 1 | 9 | 0 | 0 | 1 | 0 | – |
| 2009/2010 | Kavala | Super League 1 | 5 | 1 | 0 | 0 | 0 | – |
| 2008/2009 | Apollon Kalamarias | Football League | 0 | 6 | 0 | 0 | 0 | – |
| Total | 278 | 57 | 4 | 25 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| 07 Aug 2022 | Macarthur | Kerala | Free | |
| - | OFI | Macarthur | N/A | |
| - | AEK Larnaca | OFI | Free | |
| - | Guangzhou City | AEK Larnaca | Free | |
| 07 Jan 2015 | Panionios | Asteras | Free | |
| 09 Feb 2013 | PAOK | Panionios | Free | |
| 07 Jan 2013 | Platanias | PAOK | N/A | |
| - | PAOK | Platanias | Loan | |
| - | Kavala | PAOK | Free |
A. Giannou career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.