Potterfests

Fest Name: HarryGlots Fest 2025
Links: Tumblr | AO3 | Rules | Sign-up
Type of Challenge: Anonymous prompt fest.
Description: A HP fest celebrating non-English fanworks. Welcomes non-English fics, translations and podfics. Art is not allowed unless it's a comic or a cartoon. Claiming is not required. To participate, post your work to the AO3 collection and fill out the submission form by June 10.
Ratings Restrictions: All ratings allowed
Length Restrictions: Minimum 500 words; no maximum
Timeline:
Prompting: March 22nd — March 31st
Sign-up: April 4 - June 10
Works due: June 10
Posting starts: June 17
Author reveals: after the posting period is complete

Fest Name: HP Hedonism Fest
Links: Tumblr | Announcement | Rules | Sign-up
Type of Challenge: Non-anonymous prompt fest
Description: A HP fic and art fest dedicated to the theme of hedonism. Sign-up is open till August 9.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 500 words; no maximum
Art: None
Timeline:
Prompting: March 17 - 30
Sign-up: March 31 - August 9
Submission Due: August 10
Posting: August 18

Fest Name: HP Daddy Knows Best 2025
Links: Tumblr | Bluesky | AO3 | Rules | Submit a Prompt | Claiming
Type of Challenge: Anonymous prompt fest
Description: A HP daddy-related fic and art fest. Claiming is open till May 31. Each prompt can be claimed multiple times.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 1000 words; no maximum
Art: None
Timeline:
Prompting: March 16 - March 28
Claiming: March 19 - May 31
Works Due: June 12 at 11:59PM PT
Anonymous Reveals Begin: June 15
Social Media Features: June 15 - 20
Creators Revealed: July 1

Fest Name: HP Daddy Knows Best 2025
Links: Tumblr | Bluesky | AO3 | Rules | Submit a Prompt
Type of Challenge: Anonymous prompt fest
Description: A HP daddy-related fic and art fest. You can interpret the daddy theme in any way you like. Prompting is open till March 28. Submit your prompt to the AO3 collection.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 1000 words; no maximum
Art: None
Timeline:
Prompting: March 16 - March 28
Claiming: March 19 - May 31
Works Due: June 12 at 11:59PM PT
Anonymous Reveals Begin: June 15
Social Media Features: June 15 - 20
Creators Revealed: July 1

Fest Name: HP Animagi Week 2025
Links: Tumblr | AO3 & Rules | Prompts
Type of Challenge: Prompt challenge
Description: A week-long prompt challenge celebrating animagi in the HP world. Open to fic and artwork. AI-generated content not allowed. The fest will take place from April 7 to April 13.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 100 words; no maximum
Art: None
Timeline:
Prompt list revealed: January 8
Fest opens: April 7 - April 13
AO3 Collection closes: April 17
Masterlist shared: April 18

Fest Name: It's a Winterful Life: A Harry Potter Hallmark Fest
Links: Bluesky | AO3 & Rules | Claim a Prompt | Sign-up Form
Type of Challenge: Anonymous prompt fest
Description: A HP prompt fest themed around winter. Claiming is open till February 9.
Ratings Restrictions: All ratings allowed
Length Restrictions: Minimum 1000 words; no maximum
Timeline:
Claiming: December 2 - February 9
Works due: February 11

Fest Name: Myths and Legends Fest
Origin: Knightly Revels Death Eater Discord
Links: AO3 & Rules | Prompt Submission Form | Sign-up Form
Type of Challenge: Anonymous prompt fest
Description: A fest that reimagines Harry Potter characters in mythological stories. AI-generated works are not allowed. Prompting is open till December 31.
Ratings Restrictions: All ratings allowed
Length Restrictions: Minimum 500 words
Timeline:
Prompting: December 6 - December 31
Claiming: December 31 - March 21
Works due: March 21
Anonymous reveals begin: March 24

It's the beginning of December. Below is a list of December/winter holiday prompt challenges and gifting events taking place throughout the month of December (that I know of).

25 Days of Draco and Harry 2024
Links: Dreamwidth | Livejournal | Tumblr | AO3 | Rules
Note: A Draco/Harry December prompt challenge. Prompts are posted daily if you are participating in the traditional method.
Timeline: December 1 - December 25

The Drarry100 Christmas Challenge 2024
Links: DW | LJ | Rules & Prompts
Note: A Draco/Harry December prompt challenge hosted by dracoharry100 community.
Timeline: December 1 - December 31

Dead in December: A HP Dead Dove Writing Fest
Links: Tumblr | AO3 & Rules | Prompts
Note: Focuses on dark fics in the HP universe.
Timeline: December 1 - January 7

Harry Potter Rec Fest 2024
Links: DW | Tumblr | Announcement | Rules | Prompts
Note: A reccing fest celebrating Harry Potter works.
Timeline: December 1 - December 31

HP Yuletide Bliss 2024
Links: Tumblr | AO3 | Rules & Timeline | Prompts
Note: Open to all HP characters and pairings. Prompts are inspired by Christmas songs and song titles.
Timeline: December 1 - December 31

( Multi-fandom under the cut. )

Fest Name: Dead in December: A HP Dead Dove Writing Fest
Links: Tumblr | AO3 & Rules | Prompts
Type of Challenge: Prompt challenge
Description: A December HP writing fest focusing on dead dove topics and dark fics. AI-generated content is not allowed. The fest will run from December 1 to January 7.
Ratings Restrictions: All ratings allowed
Length Restrictions: None
Timeline:
Fest starts: December 1
Last day to post: January 7

Fest Name: HP Yuletide Bliss 2024
Links: Tumblr | Rules & Timeline | Prompts
Type of Challenge: Prompt challenge
Description: A HP December prompt challenge where the prompts are lines from Christmas songs and song titles. Any pairings and/or characters are welcome. The fest will run from December 1 to 31.
Ratings Restrictions: All ratings allowed
Length Restrictions: None
Timeline:
Prompts posted: November 10
AO3 collection opens & posting starts: December 1
Last day of posting & collection closes: December 31
Masterlist posted: January 1