r/biology

Science subreddit · 5.4M members

A place to discuss all things biology! We welcome people and content from all related fields.

— r/biology sidebar description
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Members
5,439,432 (July 2025)
Size rank
#117 of 2,960 subreddits we track, larger than 96% of them
Topic
Science · #4 of 39 in Science
Address
reddit.com/r/biology · how to join

Subreddits like r/biology

Communities whose topic and description overlap most with r/biology. Of these, r/science is the biggest at 34.2M members, about 6.3× the size of r/biology.