Subreddits starting with C

The C programming language.

Couch to 5K: a beginner running programme and support.

Photos of cabins, cottages, and cosy retreats.

Photos of badly installed and poorly planned cabling.

Tidy cable management.

Neat cable management in server rooms and setups.

Computer-aided design.

Café racer motorcycles.

Calgary: local discussion.

California: news and discussion.

Discussion of the series Californication.

Calligraphy: lettering, practice, and tools.

News and discussion about the Call of Duty series.

For students at Cal Poly.

Fans of the comic strip Calvin and Hobbes.

Chevrolet Camaro owners.

The MMO Camelot Unchained.

Camping tips, gear, and trips.

Camping and hiking trips, gear, and tips.

Canada: news and discussion.

Canadian politics and policy.

The Canadian Armed Forces.

Canberra: news, events, and local discussion.

Support for people affected by cancer.

Home canning and preserving.

Vancouver Canucks fans.

Canyoneering trips and technique.

Capybaras: photos and facts.

Car audio systems and installs.

St. Louis Cardinals fans.

The Cards Against Humanity party game.

High-quality photos of cars.

Cars and car culture.

Car questions and advice.

Cartoons old and new.

Cassette tapes: releases, decks, and collecting.

Cast iron cookware: cooking, care, and restoring.

Castles from around the world.

The TV series Castle.

Casual AMAs from ordinary people.

Casual maths discussion.

Casual Nintendo fan content: art, music remixes, and jokes.

The board game Catan: strategy and discussion.

Funny and cute GIFs of cats.

Catholicism: faith and discussion.

Share pictures of cats.

Cat GIFs to use as reactions.

Cats: photos, care, and questions.

Funny and cute videos of cats.

Caving and cave exploration.

Studying for the Cisco CCNA.

Playing the cello: technique, lessons, and repertoire.

Photos of cemeteries, graves, and memorials.

Help and discussion for CentOS Linux.

College football news, games, and discussion.

The Canadian Football League.

Explain your view and invite others to change it.

Chapel Hill, North Carolina: local discussion.

Drawing characters: practice and critique.

Curing meats and charcuterie.

Chargers fans: games, news, and discussion.

Charleston, South Carolina: local discussion.

Charlotte, North Carolina: local discussion.

Chattanooga: news, events, and local discussion.

Cheap, filling meals.

Maths homework help.

Cheese: varieties, pairings, and photos.

Photos and recipes for cheeseburgers.

For professional chefs.

Chelsea FC fans: games, news, and discussion.

Help with chemistry questions.

Chemical engineering.

Chemical reactions in GIFs.

Chemistry: questions, research, and news.

The Chernobyl disaster and the exclusion zone.

Chess: games, puzzles, and strategy.

Chicago Bears fans: games, news, and discussion.

Chicago: news, events, and local discussion.

Chicago Bulls fans: games, news, and discussion.

Food and restaurants in Chicago.

The Chicago suburbs: local discussion.

Chihuahua owners and fans.

Childfree by choice.

Chile: news and discussion.

Chill music to relax to.

Chillstep music: relaxed, melodic tracks and artists.

Chillwave music: tracks and artists.

China: news and discussion.

Keeping pet chinchillas.

Learn Chinese: questions and practice.

Learn Chinese: Mandarin questions, practice, and resources.

Chiptune music made with retro sound chips.

Chivalry: Medieval Warfare.

Choral music and choirs.

Defending and discussing Christian belief.

Discussion of Christianity.

Christmas decorations, traditions, and ideas.

The Google Chrome browser.

ChromeOS and Chromebooks.

Support for chronic pain.

Discussion of the classic RPG Chrono Trigger.

Discussion of the TV series Chuck.

Credit card rewards.

Cigars: reviews and discussion.

Cincinnati, Ohio: news, events, and local discussion.

Cinemagraphs: still photos with a small moving part.

Film and TV stills of standout acting moments, shared and discussed.

The craft of cinematography: lighting, cameras, and shots.

Cisco networking gear and certifications.

Photos of cities and skylines from around the world.

The Civilization series.

For students at Clarkson University.

Clash of Clans: strategy, bases, and clans.

Classical guitar: technique and repertoire.

Classical music: composers and recordings.

Classic cars: restoration and photos.

Classic films and the stars of old Hollywood.

Classic rock music: artists, albums, and recommendations.

Writing clean, readable code.

Clean, family-friendly jokes.

For students at Clemson.

Cleveland: local discussion.

Cleveland Cavaliers fans.

Climate science and climate change.

A community for women who climb.

Training to climb harder.

Climbing of all kinds.

Photos of rock climbing and the places people climb.

Climbing videos: sends, falls, and films.

The Clojure programming language.

Using cloth nappies.

For students at Carnegie Mellon.

The Coachella festival.

Cocktail recipes, techniques, and home bartending.

Discussion of the anime series Code Geass.

Coding and software.

Call of Duty Zombies.

Coffee: brewing, beans, and gear.

Cognitive science research.

Fans of Coheed and Cambria: music, news, and discussion.

Coin collecting and numismatics.

Fans of Coldplay: music, news, and discussion.

College life and advice.

NCAA college baseball.

NCAA college basketball.

College ice hockey: teams, games, and news.

Colombia: news and discussion.

Colorado: news and discussion.

Colorado Avalanche fans.

Colorado Springs: local discussion.

Living with colour blindness.

Colourised historical photos.

Indianapolis Colts fans.

Columbia, Missouri: news, events, and local discussion.

Columbus, Ohio: local discussion.

GIFs combined side by side.

Comedy of all kinds.

Writing comedy: jokes, sketches, and feedback.

Comic book art and artists.

Films based on comic books.

Comic books of every kind.

Comics: news, recommendations, and discussion.

The Command & Conquer strategy games.

Command-line tools and tips.

Communist politics and theory.

Questions about communism.

Discussion of the sitcom Community.

Company of Heroes: strategy and discussion.

Competitive Dota 2: tournaments, teams, and pro play.

Competitive Halo and esports.

Compiler design and implementation.

Composing music: help and feedback.

Computer science discussion.

Digital forensics and investigation.

Computer graphics and rendering.

Computers in general.

Computer security questions and news.

Computer technicians.

Computer vision research and applications.

Conan O'Brien's shows.

Photos taken at concerts and live shows.

Constructed languages and how to make them.

Connecticut: news and discussion.

Conservation of nature and wildlife.

Conservative politics.

Conservative politics.

Careers in consulting.

Videos of infectious laughter.

Contemporary art and artists.

Ask kitchen questions and share cooking techniques and ideas.

Recipes and tips for cooking for one person.

Cooking videos and recipe tutorials.

Recipes that cook with beer.

Watching TV without cable.

Corgi owners and fans.

For students at Cornell University.

Cosmology: the origin and structure of the universe.

Cosplay costumes and photos.

Cosplay photos and costumes.

Couchsurfing and staying with locals.

Counter-Strike: news and discussion.

Counter-Strike: news and discussion.

Country music: artists and new releases.

Cover versions of songs.

Fans of the anime Cowboy Bebop.

Dallas Cowboys fans.

Tottenham Hotspur fans.

C++ programming help and discussion.

The C++ programming language.

Crafts of all kinds: projects and ideas.

Examples of bad design.

Intentionally bad and funny music.

Creepy moments in games.

Short horror stories shared online.

Cricket news and matches.

Awkward and cringe-worthy moments.

Cringe-worthy pictures.

Critical theory discussion.

Croatia: news and discussion.

Crochet patterns, projects, and help.

Support for people with Crohn's disease.

CrossFit training and workouts.

Cross-eyed 3D images.

Crossword puzzles and help.

Crusader Kings: dynasties, stories, and strategy.

Cryptography: algorithms and security.

Cryptocurrency news and discussion.

Cryptography: algorithms and security.

Questions about jobs, interviews, and careers in software.

C# programming help and discussion.

CSS help and techniques.

H. P. Lovecraft's Cthulhu mythos.

Rubik's cubes and speedcubing.

Chicago Cubs fans: games, news, and discussion.

Photos of beautifully prepared and plated food.

Cult films: recommendations and discussion.

Cupcake recipes and decorating.

Curb Your Enthusiasm.

The Curiosity Mars rover.

Unusual places around the world.

Care tips for curly hair.

Customising computers and phones.

Custom-made Magic: The Gathering cards.

Fans of the webcomic Cyanide & Happiness.

Cyberpunk fiction and culture.

Cyberpunk and synthwave music.

Cybernetics and human augmentation.

Cycling: road, racing, and everyday riding.

Cyclocross racing and bikes.