Subreddits starting with M

Mac computers: help, news, and setups.

Mac apps and recommendations.

Gaming on a Mac: games, tools, and performance.

Machine learning research.

Photos of machines and mechanical design.

Macro photography of tiny subjects up close.

Desk setups with Macs.

The Madden NFL games.

Things that made people smile.

Madison, Wisconsin: local discussion.

Discussion of Mad Men.

Magic tricks and performing magic.

Building Magic: The Gathering decks.

Magic: The Gathering.

Maine: news and discussion.

Meet new people and make friends.

Makeup: products and looks.

Makeup looks and advice.

Swap and sell makeup.

Producing hip-hop beats and songs.

Malaysia: news and discussion.

Malcolm in the Middle.

Men's fashion and style.

Fashion advice for men.

Grooming advice for men.

Hair advice for men.

Living spaces for men.

Malware analysis and research.

MAME arcade emulation.

Management and leadership at work.

Manchester, UK: local discussion.

Playing the mandolin.

Manga news and discussion.

MapleStory: news, guides, and discussion.

Making maps for games and stories.

Interesting and informative maps.

Interesting maps and cartography.

Marching band: members, music, and shows.

Marine biology: ocean life and research.

Seattle Mariners fans and baseball discussion.

The Super Mario games.

Marketing: strategy, careers, and discussion.

The planet Mars and its exploration.

Martial arts of all styles.

Marvel comics and films.

Marvel Studios films and shows.

Marxist theory and discussion.

Maryland: news, events, and local discussion.

The TV series M*A*S*H.

Song mashups that blend two or more tracks.

Massachusetts: news and discussion.

Massage: techniques and therapy.

The Mass Effect series.

Mathematics: questions and discussion.

Maths book recommendations.

Teaching mathematics.

Wolfram Mathematica.

Mathematical pictures.

Math rock music: artists, albums, and recommendations.

MATLAB programming help and discussion.

Dallas Mavericks fans.

Help and work made with Autodesk Maya 3D.

Mazda owners and fans.

Myers-Briggs personality types.

Manchester City fans.

For students at McGill University.

Minecraft: Bedrock Edition.

Find Minecraft servers to join.

Relatable memes about everyday life.

Making and drinking mead.

Cooking and enjoying meat.

Car repair advice from mechanics.

Mechanical engineering.

Mechanical keyboards and builds.

The MechWarrior games.

Discussion of medicine and medical topics.

Medical school: studying, exams, and life.

Medicine and healthcare.

Medieval history and the Middle Ages.

Meditation practice and techniques.

The Mega Man series.

The Shin Megami Tensei and Persona games.

Melbourne, Australia: local discussion.

Melodic death metal.

Melodic hardcore music.

Melodic metal bands and albums.

A general place to share memes.

Memes of all kinds, updated daily.

Memphis: news, events, and local discussion.

Mental health support and discussion.

Mercedes-Benz owners and fans.

Deadpool in comics and film.

Discussion of the BBC series Merlin.

Community mesh networks.

Mesoamerican history and cultures.

Metal music: news, bands, and albums.

Metalcore music: artists, albums, and recommendations.

The Metal Gear series.

The Metal Gear series.

Fans of Metallica: music, news, and discussion.

Memes about metal music.

For musicians who play metal.

Fans of Metalocalypse.

Photos of metalwork and molten metal.

Metalworking projects and techniques.

Fans of the band Metric.

The Metroid series: games, lore, and discussion.

Mexico: news and discussion.

Miami: news and local discussion.

Miami Dolphins fans.

Mazda MX-5 Miata owners and fans.

Michigan: news and discussion.

Michigan Wolverines fans.

Microbiology: microbes and research.

Images taken through microscopes.

News and discussion about Microsoft.

News from the Middle East.

Discussion of the comedy series The Mighty Boosh.

Support for migraine sufferers.

Small things that are annoying.

Things that are only mildly interesting.

Military discussion.

Questions about joining the military.

The history of warfare and militaries.

Photos of military equipment and personnel.

Milwaukee: local discussion.

Mindfulness practice.

Minecraft: builds, news, and discussion.

Minecraft redstone inventions.

Minecraft maps to download and play.

Interesting Minecraft world seeds.

Suggestions for new Minecraft features.

MINI cars: owners and enthusiasts.

Minimalism: living with less.

Minimalist wallpapers.

Painting miniatures.

Minneapolis: news, events, and local discussion.

Minnesota: news and discussion.

Minnesota Twins fans and baseball discussion.

Minnesota Vikings fans.

Discussion of the series Misfits.

Images that look like something else at first glance.

Support for people with misophonia.

Mississauga, Ontario: local discussion.

Mississippi: news and discussion.

Missouri: news and discussion.

Brandon Sanderson's Mistborn.

For students at MIT.

Mitchell and Webb comedy.

For students at Mizzou.

Major League Baseball.

Major League Soccer.

Mixed martial arts news and fights.

"Make me feel better": support when you're having a hard time.

MMORPGs: news and discussion.

Wallpapers for phones.

Scale model building.

Model railways: layouts, trains, and tips.

Moderate political discussion.

Discussion of the sitcom Modern Family.

Fans of Modest Mouse.

Help for Reddit moderators.

A community for mums.

Discussion about money and personal finance.

The Monstercat record label.

The Monster Hunter series.

Montana: news and discussion.

Montgomery County, Maryland.

Montreal: local discussion.

Fans of Monty Python.

Moombahton music: artists, albums, and recommendations.

Mopeds and scooters.

Discussion of Mormonism.

The Elder Scrolls III: Morrowind.

Motion graphics and animation design.

Motivation and encouragement.

Motocross racing and riding.

MotoGP motorcycle racing.

Detroit Tigers fans and baseball discussion.

Motorcycles: riding, bikes, and discussion.

Motorsport of all kinds.

Fans of The Mountain Goats.

The Mount & Blade games.

Growing and styling a moustache.

Film music and soundtracks.

Film posters, official and fan-made.

Talk about films, filmmakers, and what you have been watching.

Behind-the-scenes photos from film sets.

Ask for a film recommendation or share a movie worth a watch.

Mystery Science Theater 3000.

For students at Michigan State University.

Mountain biking: trails, bikes, and riding.

Hand-painted Magic: The Gathering cards.

Magic: The Gathering card prices.

Photos of Magic: The Gathering cards and collections.

Amazon Mechanical Turk work.

Muay Thai training and fights.

The Munchkin card game.

Munich, Germany: local news and discussion.

The Muppets: shows, films, and characters.

Patriotic American humour.

Fans of Muse: music, news, and discussion.

Museums and their collections.

Discuss artists, recordings, and the music you are listening to.

Musical theatre: shows, cast albums, and news.

Photos of home music studios and setups.

Music festivals: lineups and tips.

Music to help you focus.

For working musicians.

The latest news from the music world.

Music theory questions and lessons.

Music videos worth watching.

Ford Mustang owners and fans.

MechWarrior Online: mechs, builds, and news.

Fans of My Chemical Romance.

Mushrooms and fungi.

Fans of My Little Pony.

Making your own outdoor gear.

Partners of trans people.

Help and discussion for the MySQL database.

Discussion of the TV show MythBusters.