| Club: | AZ Alkmaar |
| Season: | 2020–21 |
| Ownertitle: | Executive director Technical director |
| Owner: | Robert Eenhoorn Max Huiberts |
| Chairman: | René Neelissen |
| Manager: | Arne Slot (until 4 December) Pascal Jansen (from 4 December) |
| Stadium: | AFAS Stadion |
| League: | Eredivisie |
| League Result: | 3rd |
| Cup1: | KNVB Cup |
| Cup1 Result: | Round of 16 |
| Cup2: | UEFA Champions League |
| Cup2 Result: | Third qualifying round |
| Cup3: | UEFA Europa League |
| Cup3 Result: | Group stage |
| League Topscorer: | Myron Boadu (15) |
| Season Topscorer: | Myron Boadu (15) |
| Pattern La1: | _melbcity1718A |
| Pattern B1: | _az2021h |
| Pattern Ra1: | _melbcity1718A |
| Pattern So1: | _az2021h |
| Leftarm1: | FF0000 |
| Body1: | FF0000 |
| Rightarm1: | FF0000 |
| Shorts1: | FFFFFF |
| Socks1: | FFFFFF |
| Pattern B2: | _niketrophy4nrb |
| Leftarm2: | 0033FF |
| Body2: | 000055 |
| Rightarm2: | 0033FF |
| Shorts2: | 000055 |
| Socks2: | 000055 |
| Pattern B3: | _niketrophy4tv |
| Leftarm3: | CCFF00 |
| Body3: | 08E8DE |
| Rightarm3: | CCFF00 |
| Shorts3: | 08E8DE |
| Socks3: | CCFF00 |
| Prevseason: | 2019–20 |
| Nextseason: | 2021–22 |
The 2020–21 AZ Alkmaar season was the club's 54th season in existence and the 23rd consecutive season in the top flight of Dutch football. In addition to the domestic league, AZ participated in this season's editions of the KNVB Cup, the UEFA Champions League and the UEFA Europa League. The season covered the period from 1 July 2020 to 30 June 2021.
On 5 December 2020, manager Arne Slot was sacked following rumors that he was negotiating to become the new manager of Feyenoord for the following season.[1]
| scope=col | Player | Transferred from | scope=col; style="width: 65px;" | Fee | scope=col | Date | scope=col | Source | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 |  Elfsborg | Undisclosed | [2] | |||||||
| 15 | Stoke City | Loan | [3] |
| scope=col | Player | Transferred to | scope=col; style="width: 65px;" | Fee | scope=col | Date | scope=col | Source | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | TBD |
See main article: 2020–21 Eredivisie.
The league fixtures were announced on 24 July 2020.[4]
See main article: 2020–21 KNVB Cup.
See main article: 2020–21 UEFA Champions League.
See main article: 2020–21 UEFA Europa League.
The group stage draw was held on 2 October 2020.[5]
Last updated on 27 December 2020.|-! colspan="14" style="background:#dcdcdc; text-align:center"|Goalkeepers|-! colspan="14" style="background:#dcdcdc; text-align:center"|Defenders|-! colspan="14" style="background:#dcdcdc; text-align:center"|Midfielders|-! colspan="14" style="background:#dcdcdc; text-align:center"|Forwards|-! colspan=14 style=background:#dcdcdc; text-align:center|Players who have made an appearance this season but have left the club|}
| width=15 | width=15 | width=15 | width=15 | width=145 | Name | width=120 | Eredivisie | width=120 | KNVB Cup | width=140 | Champions League | width=120 | Total | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 28 | FW |  | Albert Guðmundsson | 0 | 0 | 2 | 2 | |||||||||
| 2 | 8 | MF | Teun Koopmeiners | 0 | 0 | 1 | 1 | ||||||||||
| Totals | 0 | 0 | 3 | 3 | |||||||||||||