CTF Time

Name: Grey Cat The Flag 2025 (an Grey Cat The Flag event.)
Date: May 31, 2025, noon — 01 June 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctfd.nusgreyhats.org/
Rating weight: 32.92
Event organizers: NUSGreyhats

Name: Hardwear.io USA 2025 Hardware CTF (an Hardware CTF by Quarkslab event.)
Date: May 30, 2025, 5 p.m. — 31 May 2025, 20:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: US, Santa Clara
Offical URL: https://hwctf.quarkslab.com/
Rating weight: 0.00
Event organizers: Hardware CTF by Quarkslab

Name: D^3CTF 2025 (an D^3CTF event.)
Date: May 30, 2025, noon — 31 May 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://d3c.tf/
Rating weight: 54.67
Event organizers: D^3CTF Organizers

Name: GIT X IITB Trust Lab CTF (an GITxIITB TL CTF event.)
Date: May 28, 2025, 7:23 a.m. — 28 May 2025, 07:23 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: KLS GIT, Belagavi, Karnataka, India
Offical URL: https://unstop.com/p/git-x-iitb-ctf-kls-git-1461610
Rating weight: 0.00
Event organizers: fs0cie1yᶦⁿᵈᶦᵃ

Name: Global Cyber Skills Benchmark CTF 2025: Operation Blackout (an Hack The Box CTF event.)
Date: May 23, 2025, 1 p.m. — 27 May 2025, 13:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.hackthebox.com/event/details/global-cyber-skills-benchmark-ctf-2025-operation-blackout-2174
Rating weight: 24.00
Event organizers: Hack The Box

Name: NahamCon CTF 2025 (an Just Hacking event.)
Date: May 23, 2025, 7 p.m. — 25 May 2025, 19:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.nahamcon.com/
Rating weight: 53.77
Event organizers: JohnHammond

Name: HACK'OSINT CTF - 2025 (an HACK'OSINTCTF event.)
Date: May 23, 2025, 7 p.m. — 25 May 2025, 19:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: France
Offical URL: https://ctf.hackolyte.fr/
Rating weight: 0.00
Event organizers: Hack'olyte

Name: DaVinciCTF 2025 (an DaVinciCTF event.)
Date: May 24, 2025, 10 a.m. — 25 May 2025, 20:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Location: La Défense - Paris
Offical URL: https://dvc.tf/
Rating weight: 45.00
Event organizers: DaVinciCode

Name: SAS CTF 2025 Quals (an SAS CTF event.)
Date: May 24, 2025, noon — 25 May 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.thesascon.com/
Rating weight: 20.72
Event organizers: SAS CREW

Name: AI CTF 2025 (an AI CTF event.)
Date: May 22, 2025, 5 p.m. — 24 May 2025, 09:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://aictf.phdays.fun/
Rating weight: 0
Event organizers: [TechnoPandas]

Name: AlpacaHack Round 11 (Web) (an AlpacaHack event.)
Date: May 17, 2025, 3 a.m. — 17 May 2025, 09:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://alpacahack.com/ctfs/round-11
Rating weight: 0
Event organizers: AlpacaHack

Name: Midnight Sun CTF 2025 Quals (an Midnight Sun CTF event.)
Date: May 17, 2025, noon — 18 May 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://midnightsunctf.com/
Rating weight: 53.00
Event organizers: HackingForSoju

Name: BYUCTF 2025 (an BYUCTF event.)
Date: May 17, 2025, 2 a.m. — 18 May 2025, 02:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctfd.cyberjousting.com/
Rating weight: 36.94
Event organizers: BYU Cyberia

Name: WhiteHats TrojanCTF 2025 (an TrojanCTF event.)
Date: May 17, 2025, 9 a.m. — 17 May 2025, 21:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Netherlands, Eindhoven
Offical URL: https://discord.gg/fXHCe9zsHC
Rating weight: 0.00
Event organizers: E.S.H.A. Trojan

Name: Cyshock - The Awakening (an Cyshock event.)
Date: May 14, 2025, 8 a.m. — 15 May 2025, 16:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://cyshock.ctfd.io/
Rating weight: 0.00
Event organizers: Visionspace

Name: San Diego CTF 2025 (an San Diego CTF event.)
Date: May 9, 2025, 11 p.m. — 11 May 2025, 23:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.sdc.tf/
Rating weight: 22.18
Event organizers: 3 Prongs And a Computer

Name: DamCTF 2025 (an DamCTF event.)
Date: May 10, 2025, midnight — 12 May 2025, 00:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://damctf.xyz/
Rating weight: 60.67
Event organizers: OSUSEC

Name: GooseCTF - misc0nfig 25 (an GooseCTF event.)
Date: May 10, 2025, 11 a.m. — 11 May 2025, 22:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://goosectf.lilypadd.com/
Rating weight: 0.00
Event organizers: Warwick Cyber Security Society

Name: Break the Syntax CTF 2025 (an Break the Syntax CTF event.)
Date: May 9, 2025, 4 p.m. — 11 May 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://bts2025.wh.edu.pl/
Rating weight: 42.00
Event organizers: PWr Synt@x Err0r

Name: Rams CTF 2025 (an Rams CTF event.)
Date: May 10, 2025, 3:11 p.m. — 10 May 2025, 15:11 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://rams-ctf.com/
Rating weight: 0
Event organizers: RAM Overflow