Free Tool

Subreddit Finder

Find the best subreddits for any topic. Search Reddit for relevant communities and see subscriber counts ranked by size — perfect for finding where your audience hangs out.

25 subreddits for marketing

Ranked by subscribers

r/funny

Reddit's largest humor depository

67.6Mmembers

r/Entrepreneur

Our community brings together individuals driven by a shared commitment to problem-solving, professional networking, and collaborative innovation, all with the goal of making a positive impact. We welcome a diverse range of pursuits, from side projects and small businesses to venture-backed startups and solo ventures. However, this is a space for genuine connection and exchange of ideas, not self-promotion. Please refrain from promoting personal blogs, consulting services, books, MLMs, opinions.

5.3Mmembers

r/CryptoMoonShots

The OG Home of Memecoins and Low-Cap Moonshots 🚀

If you're interested in low market cap cryptocurrencies and the world of memecoins with high potential, you've found the right place. This subreddit is all about discovering hidden gems that might just be the next big thing. Make sure you read the sidebar thoroughly. There are rules and participation requirements here. Be very cautious if you're new to crypto.

2.3Mmembers

r/gamedev

Game Development Discussions on Reddit

The subreddit covers various game development aspects, including programming, design, writing, art, game jams, postmortems, and marketing. It serves as a hub for game creators to discuss and share their insights, experiences, and expertise in the industry.

2.1Mmembers

r/marketing

Marketing & Advertising

For marketing communications + advertising industry professionals to discuss and ask questions related to marketing strategy, media planning, digital, social, search, campaigns, data science, email, user experience, content, copywriting, segmentation, attribution, data visualization, testing, optimization, and martech. We are a support network for people working at brands, businesses, agencies, vendors, and academia.

2.0Mmembers

r/antiMLM

Stop MLM schemes from draining your friends dry.

Multi Level Marketing (MLM) schemes are a drain on our society. Its participants either build the pyramid taller or get squashed by it.

855.6kmembers

r/DigitalMarketing

Digital Marketing

A place for digital marketers to come together to have professional conversations on all things digital. No promotional posts. This rule will be strictly enforced.

455.2kmembers

r/InstagramMarketing

Instagram Marketing

All things White Hat and Black Hat Instagram.

378.8kmembers

r/digital_marketing

Digital marketing: turning online content into business value

For digital marketing news, best practices, strategy, and learning.

372.2kmembers

r/SocialMediaMarketing

Social Media Marketing

r/SocialMediaMarketing is a place for SMM professionals to share industry-relevant information, discuss best practices, and provide constructive critique.

310.1kmembers

r/Affiliatemarketing

Affiliate Marketing

A community to discuss Affiliate marketing (AM,) paid traffic, SEO, email marketing, and more. READ OUR WIKI: https://reddit.com/r/Affiliatemarketing/wiki/index

289.3kmembers

r/advertising

THIS IS NOT A PLACE TO ADVERTISE. YOU WILL BE BANNED. r/Advertising: Is for ad creators, students, copywriters, and anyone else who is finely honing their reverse banner blindness for professional reasons.

254.6kmembers

r/content_marketing

Content Marketing

A community of content marketers helping each other improve by providing feedback, sharing advice, and resources. This is not a place to spam your blog.

200.8kmembers

r/AskMarketing

Ask your marketing questions here.

Have a question about marketing? This is your place to ask.

165.6kmembers

r/Emailmarketing

Email Marketing

A place for email marketing professionals to talk shop.

122.9kmembers

r/musicmarketing

Music Marketing: Reddit's Resource for Musicians Learning the Music Business

Welcome to the r/musicmarketing! The only sub on Reddit 100% devoted to getting answers on how to market your music. PLEASE! Read our rules and Community WIKI before attempting to post. Help our community be its best! Report rule violations to mods. NOTE ! - You will need minimum 50 Contribution Karma to Post here.

110.0kmembers

r/b2bmarketing

B2B Marketing

A place for professional discussion and to dissect the latest trends in B2B marketing.

99.3kmembers

r/MarketingAutomation

Marketing Automation

An open discussion of Marketing Automation, Email Marketing, and the various benefits and qualities of various Automation Platforms. Join here to discuss or ask questions related to marketing automation. We do not allow any advertising Official discord https://discord.gg/BDgbRUNGt

81.6kmembers

r/DigitalMarketingHack

Incredible techniques and strategies for enhancing digital marketing and effectively managing social media.

69.5kmembers

r/MarketingHelp

Marketing and Digital Marketing Help and Advice

Marketing, Digital Marketing, AI Agents Help and Advice relating to tools, tips and tricks for marketing and digital marketing including automating with AI agents. Questions welcome related to creative campaigns, social media, media buying, PPC, content, email and general automation, lead generation, SEO, influencer marketing, product marketing, website, design, UX, CX, CRO and analytics/predictive analytics and reporting on it.

43.7kmembers

r/MarketingGeek

Welcome to r/MarketingGeek! Your ultimate subreddit for mastering digital marketing, SEO tips, social media strategies, content creation, and everything marketing-related. Ask your questions, learn from fellow marketing geeks, and level up your marketing game today!

41.3kmembers

r/MarketingResearch

Marketing Research: Discussions, Tips, and News

Created out of necessity, this subreddit is a place where market researchers can come to ask & answer questions, post industry news, and share tips, tricks, and techniques. Marketing research is "the process or set of processes that links the producers, customers, and end users to the marketer through information used to identify and define marketing opportunities and problems; generate, refine, and evaluate marketing actions; monitor marketing performance; and improve marketing understanding"

35.2kmembers

r/ProductMarketing

Product Marketing

A place for Product Marketers to ask questions, share knowledge, vent, and discuss strategy.

32.9kmembers

r/TikTokMarketing

This community is all about TikTok Marketing. Discussions on growth, followers, likes, monetization, algorithm, ads and platform growth.

22.0kmembers

r/MarketingJobs

A jobs subreddit for marketing professionals.

The purpose of this subreddit is to connect marketing job seekers with companies seeking to fill open marketing positions or recruiters looking to place marketing professionals.

7.7kmembers

How to use the Subreddit Finder

  1. 1

    Enter a topic

    Any keyword, niche, brand name, or product category — the broader the term, the more results you'll see.

  2. 2

    Browse results ranked by size

    Subreddits are sorted by total subscribers, with active-user counts shown so you can quickly spot which communities are still alive.

  3. 3

    Open or save the subs that fit

    Click through to Reddit, or copy each subreddit name to plug into the Rules Checker and Best Time to Post tools.

  4. 4

    Validate before posting

    Use the Subreddit Rules Checker to confirm self-promo policy, karma minimums, and account-age requirements — so your post doesn't get auto-removed.

Why use the Subreddit Finder?

Whether you're launching a product, researching an industry, or planning a content campaign — knowing where your audience hangs out is half the battle. Here's how people typically use this tool.

Marketers researching where to promote

Stop guessing. See exactly which subreddits discuss your category, then prioritize the largest communities with active engagement for your campaigns.

Founders launching a product

Find the 5–10 subreddits where your earliest users actually live. Build a presence early, gather feedback, and announce launches in the right place.

Creators looking for niche audiences

Whether you make videos, write essays, build apps, or share art — there's a sub for it. Find the right community before posting so your work doesn't get buried.

Researchers tracking a brand or topic

See which subs discuss a product, company, or industry. Useful for sentiment analysis, competitor research, and identifying emerging trends.

Frequently asked questions

How does the Subreddit Finder work?

+

When you enter a keyword, we query Reddit's official subreddit directory and return communities whose name, title, or public description matches. Results are then ranked by subscriber count, with active-user counts displayed alongside.

Is the Subreddit Finder really free?

+

Yes — no signup, no credit card. The free tool has a per-IP rate limit to prevent abuse, but it's enough for casual research. If you want unlimited searches plus automatic monitoring of your chosen subreddits, that's what our paid product (ReplyMine) does.

How fresh is the subscriber data?

+

Each query result is cached for 6 hours. So a search for 'saas' shows data from at most 6 hours ago. This keeps the tool fast and respects Reddit's API rate limits without sacrificing accuracy for your use case.

Why are some popular subreddits missing from results?

+

A few reasons: the subreddit might be NSFW (we filter those by default), private, banned, or use a name unrelated to your search term (for example, r/Frugal won't appear when you search 'saving money'). Try synonyms or broader terms.

Can I export the list of subreddits?

+

Not from the free tool — but ReplyMine, our paid product, lets you save subreddits, monitor them automatically for high-intent posts, and export to CSV. The free tool is intended for quick discovery.

How is this different from Reddit's built-in search?

+

Reddit's search is mainly tuned for posts, not communities. Our tool surfaces subreddit metadata — total members, weekly active users, and public descriptions — in a single ranked view designed specifically for marketers, founders, and researchers.

Found your subreddits? Now monitor them.

ReplyMine scans your chosen subreddits 24/7 and surfaces posts where someone is actively looking for a product like yours — scored by relevance and engagement.

Start free trial