| Name | Date | Format | Location | Weight | Notes |
|---|
| zer0pts CTF 2021 | 06 March, 00:00 UTC — 07 March 2021, 12:00 UTC | Jeopardy |
On-line
| 24.56 | | 130 teams will participate
|
| NahamCon CTF 2021 | 12 March, 20:00 UTC — 14 March 2021, 20:00 UTC | Jeopardy |
On-line
| 24.98 | | 75 teams will participate
|
| UTCTF 2021 | 13 March, 00:00 UTC — 15 March 2021, 00:00 UTC | Jeopardy |
On-line
| 34.11 | | 67 teams will participate
|
| vishwaCTF 2021 | 13 March, 10:00 UTC — 14 March 2021, 22:00 UTC | Jeopardy |
On-line
| 0.00 | | 19 teams will participate
|
| BCA CTF 2021 | 13 March, 10:00 UTC — 13 March 2021, 17:15 UTC | Jeopardy |
On-line
| 0.00 | | 10 teams will participate
|
| LINE CTF 2021 | 20 March, 00:00 UTC — 21 March 2021, 00:00 UTC | Jeopardy |
On-line
| 0.00 | | 12 teams will participate
|
| PoseidonCTF 2nd Edition **cancelled** | 20 March, 13:37 UTC — 22 March 2021, 01:37 UTC | Jeopardy |
On-line
| 24.78 | | 22 teams will participate
|
| SPRUSH CTF Quals 2021 | 21 March, 07:00 UTC — 21 March 2021, 21:00 UTC | Jeopardy |
On-line
| 0.00 | | 11 teams will participate
|
| UMassCTF | 26 March, 22:00 UTC — 28 March 2021, 22:00 UTC | Jeopardy |
On-line
| 0.00 | | 6 teams will participate
|
| VolgaCTF 2021 Qualifier | 27 March, 14:00 UTC — 28 March 2021, 14:00 UTC | Jeopardy |
On-line
| 32.73 | | 24 teams will participate
|
| ångstromCTF 2021 | 03 April, 00:00 UTC — 07 April 2021, 23:59 UTC | Jeopardy |
On-line
| 46.09 | | 16 teams will participate
|
| Shakti CTF | 03 April, 06:30 UTC — 04 April 2021, 18:30 UTC | Jeopardy |
On-line
| 25.00 | | 2 teams will participate
|
| b01lers CTF | 03 April, 22:00 UTC — 05 April 2021, 22:00 UTC | Jeopardy |
On-line
| 22.99 | | 3 teams will participate
|
| Midnight Sun CTF 2021 Quals | 09 April, 17:00 UTC — 10 April 2021, 17:00 UTC | Jeopardy |
On-line
| 50.32 | | 16 teams will participate
|
| PlaidCTF 2021 | 16 April, 21:00 UTC — 18 April 2021, 21:00 UTC | Jeopardy |
On-line
| 99.64 | | 25 teams will participate
|
| UMDCTF 2021 | 16 April, 21:00 UTC — 18 April 2021, 21:00 UTC | Jeopardy |
On-line
| 24.02 | | 2 teams will participate
|
| HeroCTF v3 | 23 April, 20:00 UTC — 25 April 2021, 22:00 UTC | Jeopardy |
On-line
| 0.00 | | 7 teams will participate
|
| WPICTF 2021 | 23 April, 22:00 UTC — 25 April 2021, 22:00 UTC | Jeopardy |
On-line
| 36.40 | | 9 teams will participate
|
| DEF CON CTF Qualifier 2021 | 01 May, 00:00 UTC — 03 May 2021, 00:00 UTC | Jeopardy |
On-line
| 80.92 | | 29 teams will participate
|
| San Diego CTF 2021 | 08 May, 00:00 UTC — 10 May 2021, 00:00 UTC | Jeopardy |
On-line
| 0.00 | | 5 teams will participate
|
| HSCTF 8 | 24 May, 12:00 UTC — 29 May 2021, 00:00 UTC | Jeopardy |
On-line
| 24.50 | | 5 teams will participate
|
| Pwn2Win CTF 2021 | 28 May, 16:37 UTC — 30 May 2021, 16:37 UTC | Jeopardy |
On-line
| 83.41 | | 18 teams will participate
|
| Zh3r0 CTF V2 | 04 June, 10:30 UTC — 06 June 2021, 10:30 UTC | Jeopardy |
On-line
| 21.85 | | 3 teams will participate
|
| WeCTF 2021 | 19 June, 17:00 UTC — 20 June 2021, 17:00 UTC | Jeopardy |
On-line
| 25.00 | | 5 teams will participate
|
| Crypto CTF 2021 | 30 July, 16:00 UTC — 31 July 2021, 16:00 UTC | Jeopardy |
On-line
| 36.00 | | 10 teams will participate
|
