| Name | Date | Format | Location | Weight | Notes |
|---|
| Ukrainian National CTF | 20 Nov., 00:00 UTC — 01 Dec. 2025, 00:00 UTC | Hack quest |
On-line
| 0 | | 35 teams will participate
|
| snakeCTF 2025 Finals | 20 Nov., 08:00 UTC — 23 Nov. 2025, 13:00 UTC | Jeopardy |
Lignano Sabbiadoro, Udine, Italy
| 0.00 | | |
| Hardwear.io NL 2025 Hardware CTF | 20 Nov., 09:00 UTC — 21 Nov. 2025, 12:50 UTC | Jeopardy |
NL, Amsterdam
| 0.00 | | 4 teams will participate
|
| MetaCTF November 2025 Flash CTF | 20 Nov., 22:00 UTC — 21 Nov. 2025, 00:00 UTC | Jeopardy |
On-line
| 0 | | Individual |
| PatriotCTF 2025 | 21 Nov., 18:00 UTC — 23 Nov. 2025, 18:00 UTC | Jeopardy |
On-line
| 42.42 | | 113 teams will participate
|
| sknbCTF 2025 | 22 Nov., 03:00 UTC — 23 Nov. 2025, 03:00 UTC | Jeopardy |
On-line
| 0.00 | | 6 teams will participate
|
| CTFZone 2025 Final | 22 Nov., 09:00 UTC — 22 Nov. 2025, 17:00 UTC | Attack-Defense |
On-line
| 96.90 | | 4 teams will participate
|
| CyberSci Regional Qualifiers 2025-26 | 22 Nov., 15:00 UTC — 22 Nov. 2025, 22:00 UTC | Jeopardy |
Onsite at 6 locations in Canada
| 25.00 | | 4 teams will participate
|
| GlacierCTF 2025 | 22 Nov., 18:00 UTC — 23 Nov. 2025, 18:00 UTC | Jeopardy |
On-line
| 52.57 | | 66 teams will participate
|
| Infosec University Hackathon 2025 | 23 Nov., 02:00 UTC — 23 Nov. 2025, 07:00 UTC | Jeopardy |
On-line
| 0 | | Individual |
| 2025 Qiangwang Challenge on Cyber Mimic Defense Finals | 26 Nov., 04:00 UTC — 29 Nov. 2025, 04:00 UTC | Jeopardy |
Nanjing, China
| 0.00 | | 4 teams will participate
|
| LakeCTF Quals 25-26 | 28 Nov., 18:00 UTC — 29 Nov. 2025, 18:00 UTC | Jeopardy |
On-line
| 45.00 | | 34 teams will participate
|
| HeroCTF v7 | 28 Nov., 20:00 UTC — 30 Nov. 2025, 22:00 UTC | Jeopardy |
On-line
| 65.00 | | 53 teams will participate
|
| WP CTF 2025 | 29 Nov., 08:00 UTC — 29 Nov. 2025, 16:00 UTC | Jeopardy |
NOI Techark, Bolzano, Italy
| 0.00 | | 15 teams will participate
|
| Haix-la-Chapelle 2025 | 29 Nov., 09:00 UTC — 30 Nov. 2025, 09:00 UTC | Jeopardy |
On-line
| 0.00 | | 6 teams will participate
|
| BlackHat MEA CTF Final 2025 | 02 Dec., 08:00 UTC — 04 Dec. 2025, 15:00 UTC | Jeopardy |
Riyadh
| 22.50 | Prequalified teams only | 0 teams will participate
|
| Metared Argentina 2025 | 04 Dec., 12:00 UTC — 05 Dec. 2025, 12:00 UTC | Jeopardy |
On-line
| 0.00 | | 2 teams will participate
|
| Null CTF 2025 | 05 Dec., 15:00 UTC — 07 Dec. 2025, 15:00 UTC | Jeopardy |
On-line
| 0.00 | | 22 teams will participate
|
| P3rf3ctr00t CTF 2025 | 05 Dec., 15:00 UTC — 07 Dec. 2025, 15:00 UTC | Jeopardy |
On-line
| 0.00 | | 7 teams will participate
|
| VuwCTF 2025 | 05 Dec., 21:00 UTC — 07 Dec. 2025, 04:00 UTC | Jeopardy |
On-line
| 0.00 | | 2 teams will participate
|
| WannaGame Championship 2025 | 06 Dec., 01:00 UTC — 08 Dec. 2025, 01:00 UTC | Jeopardy |
On-line
| 29.00 | | 25 teams will participate
|
| BackdoorCTF 2025 | 06 Dec., 12:00 UTC — 08 Dec. 2025, 12:00 UTC | Jeopardy |
On-line
| 71.35 | | 22 teams will participate
|
| niteCTF 2025 | 12 Dec., 12:00 UTC — 14 Dec. 2025, 12:00 UTC | Jeopardy |
On-line
| 39.87 | | 21 teams will participate
|
| SECCON CTF 14 Quals | 13 Dec., 05:00 UTC — 14 Dec. 2025, 05:00 UTC | Jeopardy |
On-line
| 100.00 | | 64 teams will participate
|
| BSides Algiers 2025 | 18 Dec., 19:00 UTC — 20 Dec. 2025, 07:00 UTC | Jeopardy |
On-line
| 0.00 | | 12 teams will participate
|
| HKCERT CTF 2025 (Qualifying Round) | 19 Dec., 08:00 UTC — 21 Dec. 2025, 08:00 UTC | Jeopardy |
On-line
| 0.00 | | 12 teams will participate
|
| 0CTF 2025 | 20 Dec., 00:00 UTC — 22 Dec. 2025, 00:00 UTC | Jeopardy |
On-line
| 0.00 | | 1 teams will participate
|
| TSG CTF 2025 | 20 Dec., 07:00 UTC — 21 Dec. 2025, 07:00 UTC | Jeopardy |
On-line
| 25.00 | | 20 teams will participate
|
| ASIS CTF Final 2025 | 27 Dec., 14:00 UTC — 28 Dec. 2025, 14:00 UTC | Jeopardy |
On-line
| 100.00 | | 69 teams will participate
|
| hxp 39C3 CTF | 27 Dec., 20:00 UTC — 29 Dec. 2025, 20:00 UTC | Jeopardy |
On-line
| 98.14 | | 16 teams will participate
|
