Potterfests

Fest Name: LilyFest
Links: Tumblr | AO3 | Rules | Prompts
Type of Challenge: Prompt challenge
Description: A Lily Evans fanwork fest. Any medium is welcome. The fest will run from January 30 - February 3. To participate, post your Lily-centric work to the fest's AO3 collection or to Tumblr.
Ratings Restrictions: All ratings allowed
Length Restrictions: None
Timeline: January 30 - February 3

Fest Name: LilyFest
Links: Tumblr | Rules | Prompts
Type of Challenge: Prompt challenge
Description: A Lily Evans fanwork fest. Any medium is welcome. The fest will run from January 30 - February 3. To participate, post your Lily-centric work to the fest's AO3 collection or to Tumblr.
Ratings Restrictions: All ratings allowed
Length Restrictions: None
Timeline: January 30 - February 3

Fest Name: Jily Week 2024
Links: Tumblr Announcement & Prompts | AO3
Type of Challenge: Prompt challenge
Description: A week-long prompt challenge celebrating the pairing of James and Lily. The event will run from August 19 to August 25.
Ratings Restrictions: All ratings allowed
Length Restrictions: None. Any mediums of any length are welcome.
Timeline: August 19 - 25

Fest Name: Jegulily Week 2023
Links: Tumblr | AO3 & Rules | Prompts
Type of Challenge: Prompt challenge
Description: A week long prompt challenge dedicated to the ship James/Regulus/Lily.
Ratings Restrictions: All ratings allowed
Length Restrictions: None
Timeline: November 5 - 11

June 20, 2023: Fest is postponed to November. See here for the announcement.

Fest Name: Marauders Fest
Links: Tumblr | Rules | Overview & Timeline | Claim a Prompt
Type of Challenge: Prompt fest
Description: A fic and art fest for Marauders era characters during the Marauders era. Sent a message or an ask on the Tumblr page to receive a pairing and kink as your prompt. Claiming ends on July 1.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 500 words
Art: None
Updated Timeline:
Claiming: June 11 - July 1 *UPDATED*
Submissions due: August 1 *UPDATED*

Fest Name: Marauders Omegaverse Fest
Links: Tumblr | Rules | FAQ | Claiming Post
Type of Challenge: Non-anonymous prompt fest
Description: A fic and art fest revolving around Marauders-era characters and Omegaverse. Claiming is open till August 15. Each prompt can be claimed multiple times. Self-prompt is allowed.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 500 words. No maximum.
Art: None
Timeline:
Prompting: May 10 - May 31
Claiming: May 25 - August 15
Works due: August 20
Posting begins: September 1

Fest Name: Jegulily Week 2022
Links: Rules & Prompts | Posting Info | AO3
Description: A week-long prompt challenge for the pairing James/Regulus/Lily.
Length restrictions: None. Any medium is welcome.
Timeline: November 6 - 12

Updated on October 4: These are some of the HP prompt challenges (and one multi-fandom challenge) that are taking place throughout October.

hp-flowers has also posted a great list of prompt challenges that are currently happening on Tumblr. That list includes both HP fandom and multi-fandom challenges.

Rarepair Shorts: Halloween Monster Mash
Links: Dreamwidth | Livejournal | AO3 | Guidelines
Description: A prompt challenge for HP rare pairings not on the excluded ship list.
Length restriction: Between 200 - 2500 words. Art is also welcome.
Sign-ups: October 1 - October 30 at 11:59 GMT
Posting: October 1 - October 31

Harry/Draco Fluffy Halloween Fest 2022
Links: Livejournal | Rules & Prompting
Description: A Harry/Draco prompt challenge featuring Halloween and fluff. Any medium is welcome.
Prompting begins: October 3
Posting: October 3 - October 31

HP Fear Fest 2022
Links: Tumblr | Guidelines | Prompts
Description: A HP horror prompt challenge. Any medium of any length is welcome.
Post your works: October 1 - October 31
Round-ups and highlights: November 1 - November 30

HP Flowers Autumn Round
Links: Tumblr | AO3 | Guidelines | FAQ | Prompt Cards
Description: A HP flower language prompt challenge. Minimum word count is 100. No maximum. Also welcomes art and podfic.
Dates: October 1 - October 31
Masterlist Posted: November 7

Jilytober Fest 2022 (James/Lily)
Links: Tumblr | List of Events | Prompts
Description: A James/Lily prompt challenge. The fest also has several special events; some of them require registrations.
Last day to sign up for special events: September 29
Runs from: October 1 - October 31

Liquid Luck Roll the Dice Challenge Winter Edition
Links: Dreamwidth | Tumblr | AO3 | Rules
Description: A HP prompt challenge where you request for a personalised set of prompts. Fic and any kind of art are welcome. No word count limit.
Request a prompt: October 1 - December 20
Self-post to AO3: October 14 - December 24

Pod_O_Ween 2022 (Multi-fandom)
Links: Dreamwidth | Twitter | AO3 | Rules | Prompts | Treat Challenge
Description: A multi-fandom Halloween podfic event. Tricks consist of nine prompts you can use for inspiration. Treats allow you to request for a specific fic, trope, fandom etc. to be included in the Pod_O_Ween collection.
Pod_O_Ween goes live early: September 21
Final Date for Treat Requests: October 26
Final Date for posting to AO3 Collection: October 30
Podfic Reveal at Midnight: October 31

If you are looking for prompt challenge communities, check out our List of Prompt Challenge Communities. The list includes both HP communities and multi-fandom communities.

Fest Name: Jilytober Fest 2022
Links: Tumblr | List of Events | Event Registration Form (require Google sign-in)
Type of challenge: Prompt challenges, trivia, readers bingo
Description: An October event featuring the pairing James Potter and Lily Evans.
Ratings restrictions: All ratings allowed
Length restrictions: None?
Timeline:
Event Registrations: September 15 - September 29
Fest will take place: October 1 - October 31

Some of the challenges require registrations. The prompt list will be posted on Tumblr at a later date.