How to Uninstall R on Mac: Complete Step-by-Step Removal Guide

To uninstall R on Mac, you’ll need just 15 minutes and a few Terminal commands—no tech degree required. I’ve removed R from more Macs than I can count, and the process is actually simpler than most assume.

The key is knowing where R hides its files (spoiler: it’s not just the app).

First, check how you installed R—Homebrew (brew uninstall r), the official installer, or RStudio’s package manager. Each leaves different traces behind, and skipping cleanup steps means R’s leftover libraries could still clog your system. I’ll walk you through every method, including the sneaky ~/Library/R folder that catches people off guard.

You’ll end up with a completely clean slate, verified by running which R in Terminal (nothing should appear). No more phantom R processes, no lingering package conflicts, and your Mac’s storage will thank you. The best part? If you ever reinstall, you’ll start fresh without old cruft slowing things down.

Fair warning: if you installed R via a .pkg file, you’ll need to hunt for leftover preference files—here’s where I’ve seen people miss them. We’ll cover all the edge cases so you don’t end up with half-removed software that still sneaks into your workflow.

What you need

Step-by-Step instructions for removing R from your Mac completely

Here's the foolproof process I use to ensure R and all its dependencies vanish from your system.

Before removing anything, close every R-related application. Open Activity Monitor (Applications > Utilities) and search for processes containing "R," "RStudio," or "libR." Select each and click the Quit Process button. If any process resists, force-quit it.

Next, navigate to your Applications folder and drag R and RStudio (if installed) to the Trash. Empty the Trash immediately to prevent accidental reinstalls. This removes the main applications but leaves system-level files behind.

Open Terminal (Applications > Utilities) and run these commands one at a time to remove hidden files:

sudo rm -rf /Library/Frameworks/R.framework
sudo rm -rf /Library/R
sudo rm -rf ~/Library/R
sudo rm -rf /usr/local/lib/R

When prompted, enter your admin password. These commands target the core framework and user-specific libraries. Double-check each path exists before deletion—if a path returns "No such file or directory," skip it.

Some R packages install system-wide dependencies that linger after uninstallation. Run this command to list installed packages:

ls ~/Library/R/x.y/library/ (replace x.y with your R version, e.g., 4.2).

Delete the entire folder if it exists. For system-wide packages, use:

sudo rm -rf /Library/R/x.y/library/

This ensures no residual package files trigger conflicts later. If you encounter permission errors, prepend commands with sudo.

If you installed R via Homebrew, run:

brew uninstall r
brew uninstall rstudio

For Conda users, execute:

conda remove --all r

Verify removal by checking:

brew list | grep r (Homebrew)
conda list r (Conda)

If any traces remain, repeat the uninstall command. This step is critical for avoiding dependency bloat.

Open Terminal and attempt to run R:

R --version

If you see "command not found," R is fully removed. For thoroughness, reboot your Mac. After restart, check:

• Applications folder (no R entries)
  
• Terminal (no R-related paths in which R output)
  
• System Information (no R processes in Activity Monitor)

If everything checks out, you’ve successfully purged R and its remnants. No traces remain to interfere with future installs.

Tips & tricks for complete R removal on Mac

Removing R thoroughly from your Mac requires precision—here's how to avoid common pitfalls and ensure no traces remain.

Double-Check Before Deleting: In Step 2, when running the Terminal commands, verify each path exists by typing __PROTECT_14 before executing PROTECT_15. I've accidentally deleted critical system files by skipping this verification—don't make my mistake. For example, type PROTECT_16__ first to confirm R.framework exists before deleting it.

Backup Critical Data First: Before executing any __PROTECT_17 commands in Step 2, back up your PROTECT_18 folder if it contains custom packages or configurations you might need later. Use PROTECT_19__ to create a copy. This is especially important if you've installed custom R packages that aren't available through standard channels.

Handle Permission Errors Gracefully: If you encounter permission errors when deleting system-wide files in Step 2 or Step 3, don't force the deletion. Instead, use __PROTECT_20 to adjust permissions temporarily, then retry the deletion. Remember to restore permissions afterward with PROTECT_21__—I've seen systems become unstable when critical permissions are permanently altered.

Verify R Version First: In Step 3, replace x.y with your exact R version by running __PROTECT_22 in Terminal before attempting to delete package folders. This ensures you're targeting the correct version-specific library paths. For example, if you're using R 4.2.1, your command should reference PROTECT_23__ rather than a generic placeholder.

Frequently asked questions

Will uninstalling R delete my data or projects?

Nope! Uninstalling R only removes the software—your data, scripts, and projects stored in folders like __PROTECT_24 or PROTECT_25 stay safe. Just back up anything critical (like PROTECT_26__) if you’re extra cautious. Pro tip: Use Finder to locate these folders before uninstalling.

How long does it take to uninstall R completely?

Most users finish in 2–5 minutes, depending on your Mac’s speed. The longest part is usually:

• Running the uninstaller (1–2 minutes).
• Deleting leftover files manually (if needed, another 1–2 minutes).

Can I reinstall R later if I change my mind?

R’s official installer is free and easy to download. Just grab the latest version from CRAN (the Comprehensive R Archive Network) and follow the same steps you used initially. Bonus: Reinstalling won’t overwrite your old projects—just create a new workspace.

What if the uninstaller doesn’t work or leaves traces behind?

If the built-in uninstaller fails, don’t panic! Use these manual cleanup steps:

• Delete leftover folders: __PROTECT_27 and PROTECT_28__.
• Remove RStudio (if installed) via __PROTECT_29 or PROTECT_30__.
• Check __PROTECT_31 for files like PROTECT_32__ and trash them.

Are there alternatives to R I should try first?

If you’re unsure about uninstalling, consider these lightweight alternatives for data analysis or scripting:

• Python: Use libraries like __PROTECT_33 or PROTECT_34__ (install via python.org).
• Julia: A fast, modern language for technical computing (julialang.org).
• Excel/Google Sheets: Great for quick, no-code analysis (though limited for complex tasks).
• RStudio Server: Run R in the cloud without installing it locally!

Wrapping up and next steps

Uninstalling R from your Mac doesn’t have to be a hassle—now that you’ve followed these steps, your system is clean and ready for new tools! 🎉 Whether you’re freeing up space or switching to a different environment, you’ve taken control of your software. Next up: explore other data tools or dive into a fresh project with your newly decluttered Mac!

• Pro tip: Always back up important files before making system changes—better safe than sorry! 🔒
• Check out our guides on alternative data science tools for your next adventure.