Subreddits starting with P

The P90X home workout programme.

The Pacific Northwest: photos and discussion.

Paganism: beliefs, practices, and community.

Paintball: games, gear, and fields.

Share paintings and explore the materials and techniques behind them.

Pakistan: news and discussion.

The paleo diet: recipes and discussion.

Paleontology: fossils and ancient life.

News and discussion about Palestine.

A community for pansexual people.

Pantheism and the sacred in nature.

Carolina Panthers fans.

Paper models and crafts.

Paradox grand strategy games.

Faces seen in everyday objects.

Advice and discussion for parents.

Paris: local discussion.

Parkour and freerunning.

Parks and Recreation.

Keeping pet parrots: care, training, and photos.

Particle physics research and news.

Then-and-now photos of the same place.

The Pathfinder tabletop RPG.

Path of Exile: builds and discussion.

Revisit games beyond their release window and share discoveries.

New England Patriots fans.

The PAX gaming conventions.

Talk about PC games, releases, and the experience of playing on a computer.

PC gaming and builds.

Polycystic ovary syndrome support.

The Peace Corps: service and applying.

Fans of Pearl Jam: music, news, and discussion.

Professional road cycling.

Pittsburgh Penguins fans.

Examples of beautiful handwriting and calligraphy.

For students at Penn State.

Pennsylvania: news and discussion.

Find pen pals to write to.

Pensacola: news, events, and local discussion.

Pen spinning tricks.

Percussion instruments and players.

GIFs that loop perfectly.

Photos taken at just the right moment.

The Perl programming language.

Permaculture design and sustainable growing.

Personal finance: budgeting, saving, debt, and investing.

Personal finance in Canada.

Discussion of the series Person of Interest.

Perth, Australia: news, events, and local discussion.

Support after losing a pet.

Pets of all kinds: photos, care, and questions.

Small, satisfying revenge stories.

Pharmacology: how drugs affect the body.

Pharmacy: careers and questions.

Philadelphia: news and local discussion.

The Philippines: news and discussion.

Philadelphia Phillies fans.

Philosophy: ideas, thinkers, and debate.

The philosophy of mathematics.

Philosophy of religion.

Philosophy of science.

Fans of the band Phish.

Phoenix, Arizona: local discussion.

Photobombs caught on camera.

Lessons and assignments for learning photography.

Get critique on your photos.

Photo essays that tell a story.

Share your photographs and see work from others.

Talk about photography, photographic technique, and creative practice.

Adobe Photoshop help.

Photoshop battles: creative edits of photos.

Photoshop tutorials.

The PHP programming language.

Get help with PHP code.

Discuss physics research, concepts, and the questions they raise.

Physics book recommendations.

GIFs that show physics in action.

Jokes about physics.

Piano: playing, learning, and repertoire.

Piano covers of songs.

Ask for help editing photos.

Pictures and photos of anything.

Pictures of anything.

Body piercings: care and questions.

The Pikmin games: news and discussion.

Pinball machines: playing and collecting.

Fans of Pink Floyd: music, news, and discussion.

Pit bull owners and advocates.

For students at the University of Pittsburgh.

Pittsburgh: news and local discussion.

Pixar films: discussion and news.

Pixel art: work and feedback.

Pizza: recipes, dough, and photos.

The Pokémon Trading Card Game.

Planetary Annihilation.

The PlanetSide games.

Planted aquariums and aquascaping.

Give games away to others.

PlayStation news and discussion.

PlayStation Plus games and deals.

Plot holes in films and TV.

Podcast recommendations and discussion.

Poetry: reading, writing, and discussion.

Slam poetry performances.

Poi spinning: tricks and tutorials.

Point-and-click adventure games.

Pokémon: games, news, and discussion.

Pokémon giveaways and trades.

Trade Pokémon with other players.

Poker: strategy, hands, and discussion.

Poland: news, events, and local discussion.

Comics where countries are drawn as balls.

Pole dance fitness and technique.

In-depth political discussion.

Political jokes and cartoons.

Political philosophy.

Political science research and discussion.

US politics: news and discussion.

Poland: news and discussion (in Polish).

Polyamory and ethical non-monogamy.

Pop punk music: bands and albums.

Porsche owners and enthusiasts.

The Portal games: puzzles, mods, and discussion.

Portland, Oregon: local discussion.

Discussion of the comedy series Portlandia.

Portugal: news and discussion.

Post-apocalyptic fiction.

Post-hardcore music.

Post-metal music: bands, albums, and recommendations.

Photo editing and post-processing.

Post-punk music: artists, albums, and recommendations.

Post-rock music: bands, albums, and recommendations.

Pottery and ceramics.

Powerbuilding: training for strength and size.

Powerlifting: training and meets.

Power metal: artists, albums, and recommendations.

Power Rangers shows and films.

PowerShell scripting.

Satisfying videos of power washing dirty surfaces.

Pay-per-click advertising.

Pranks and practical jokes.

A community for dads-to-be.

Pregnancy support and discussion.

For pre-med students preparing for medical school.

Emergency preparedness.

US presidents and their history.

Pressure cooker recipes and tips.

Pretty Little Liars.

Printmaking techniques and prints.

Science fiction in print.

The game Prison Architect.

Online privacy and protecting your data.

Product design work and careers.

Tips, tools, and habits for getting more done.

Professional road cycling races and riders.

Progressive house music.

Progressive metal: bands, albums, and recommendations.

Jokes and memes about programming.

Software development, programming languages, and code.

Terrible code people have found.

Designing and implementing programming languages.

Progressive politics.

Before-and-after photos of weight loss and fitness progress.

Progressive rock music, classic and new.

Project cars and restorations.

Project Zomboid: survival tips and discussion.

Get help proofreading your writing.

Historical propaganda posters.

Propaganda posters from around the world.

Stories of elaborate revenge.

Beautiful passages of prose: words that get you excited.

Questions for police officers.

Help and tips for Pro Tools.

Providence, Rhode Island: local discussion.

Professional wrestling.

PlayStation 4 games and discussion.

Phantasy Star Online 2.

The PlayStation Portable.

The TV series Psych.

Psychedelic rock: classic and modern bands.

Psychology research and discussion.

Psychotherapy: questions and discussion.

Psytrance music: tracks, artists, and festivals.

Support for people living with PTSD.

Public health research and policy.

Pug owners and fans.

Punk music: artists, albums, and recommendations.

Punk rock music: artists, albums, and recommendations.

Punk, ska, and hardcore music.

Puns and wordplay of every kind.

Puns and pun-based jokes.

Pictures of puppies.

Help for new puppy owners.

For students at Purdue University.

Pure mathematics: proofs, theory, and discussion.

Puzzles and brain teasers.

The Python programming language.