The short answer
No. Your data. Shrink it from its app; don’t delete the folder.
What is it?
Each folder in ~/Library/Application Support/minecraft/saves is one of your single-player Java Edition worlds, with its map, inventories and settings. Large, long-played worlds can reach several GB.
Your worlds. Offload or back up, never deleted automatically.
What happens if you delete it?
Nothing regenerates: a deleted world is gone unless you have a backup. Java Edition single-player worlds are not synced to the cloud.
How to remove it properly
Delete worlds you no longer want from Minecraft’s Singleplayer screen (select the world, then Delete). To keep a world but free space, back it up (select it, Edit, then Make Backup) and move the backup or the world folder to an external drive.
Better moved to an external drive than deleted.
Before you delete it
Move rather than delete any world you might want to play again.
How MoreRoom helps
MoreRoom recognises this as your data and never suggests deleting it. It shows how much space it takes, so you can shrink it from its own app.
Frequently asked questions
Can I delete my Minecraft saves folder on Mac?
No. Your data. Shrink it from its app; don’t delete the folder. Nothing regenerates: a deleted world is gone unless you have a backup. Java Edition single-player worlds are not synced to the cloud.
Will Minecraft worlds come back after I delete it?
No. Nothing regenerates: a deleted world is gone unless you have a backup. Java Edition single-player worlds are not synced to the cloud.
How do I remove Minecraft worlds properly?
Delete worlds you no longer want from Minecraft’s Singleplayer screen (select the world, then Delete). To keep a world but free space, back it up (select it, Edit, then Make Backup) and move the backup or the world folder to an external drive.