How to Uninstall R on Mac: Clean Removal Without Leftover Files

Uninstalling R on Mac can feel like digging out old screws—what looks simple hides surprises. ⚡ I’ve spent hours cleaning up partial R installations where leftover files kept popping back up, so I documented the foolproof method that actually works.

The key is targeting R’s hidden folders and package caches that Finder alone misses.

First, back up any R projects or custom libraries in ~/Documents/R/—you’ll need them later. Then, check how R was installed: Homebrew, CRAN, or as an app. Each path demands different cleanup commands.

I’ll walk you through removing the app, Homebrew packages, and hidden configs like ~/.R and ~/Library/R/, plus how to verify R’s gone for good.

You’ll end up with a completely clean slate—no lingering R processes, no phantom R commands in Terminal, and no mysterious permission errors. The process takes about 15 minutes if you follow the exact steps, and I’ll flag the spots where most users trip up.

Trust me, your next fresh install will be smoother.

For the stubborn cases where R keeps reappearing, we’ll tackle LaunchAgents, which R quirks, and even macOS’s System Integrity Protection. I’ve debugged these scenarios on dozens of Macs, and the fixes are simpler than they seem. Let’s get started—no leftover traces allowed.

What you need

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

Here’s the foolproof method I use to purge R and its dependencies from macOS.

Before uninstalling, ensure no R applications or scripts are running. Open Activity Monitor (Applications > Utilities) and search for any processes with "R" in the name. Select each and click the Quit Process button. This prevents file locks that could interfere with removal.

If you’re using RStudio, close it completely. Some background processes may linger—check for anything named Rscript or Rgui and terminate those too. A clean slate ensures no orphaned files remain after uninstallation.

If you installed R via the official .pkg installer, locate the uninstaller in /Library/Frameworks/R.framework/Versions/Current/Resources. Run it by double-clicking—this removes core files but may leave behind configuration folders. For a deeper clean, open Terminal and run:

sudo rm -rf /Library/Frameworks/R.framework (for system-wide installations) or sudo rm -rf ~/Library/Frameworks/R.framework (for user-only installs). Verify removal by checking if the folder no longer exists in Finder > Go > Go to Folder.

R stores user-specific files in hidden folders. Run these commands in Terminal to purge them:

rm -rf ~/.R (removes user-specific R settings and history) rm -rf ~/Library/R (deletes cached libraries and packages) rm -rf ~/Library/Preferences/org.R-project.R.plist (removes R’s preference file)

For system-wide leftover files, add sudo before each command. Double-check with ls -la in these directories to confirm nothing remains.

If you installed R via Homebrew, run brew uninstall R in Terminal. This removes the main package but may leave behind linked libraries. Run brew cleanup afterward to clear cached dependencies.

For a thorough cleanup, also run brew uninstall r-lang (if installed separately) and brew autoremove to remove unused dependencies. Verify with brew list—no R-related packages should appear.

Open Terminal and run which R. If nothing appears, R is fully removed. Try launching RStudio or running R --version—both should return "command not found."

For extra assurance, reboot your Mac. Check Applications and Utilities folders for any lingering R-related files. If you encounter any, delete them manually or repeat the Terminal commands.

Tips & tricks for complete R removal on Mac

Cleaning up R completely takes more than just the uninstaller—here's how to avoid those pesky leftover files that cause headaches later.

Double-Check Running Processes: I can't stress this enough—before you even think about running commands, make sure R isn't running in the background. Open Activity Monitor and search for ANYTHING with "R" in the name, including "Rscript" or "Rgui". I once missed "Rscript" running silently and had to repeat the entire process after reinstalling R. Trust me, it's not worth the hassle.

Terminal Command Safety Net: When running those rm -rf commands in Step 3, I always recommend typing the full path first without the sudo to verify you're targeting the right folders. For example, type ls -la /Library/Frameworks/R.framework first to confirm the folder exists before deleting it. This prevents accidental deletions of important system files—something I learned the hard way when I misread a path once.

Homebrew Cleanup Strategy: If you installed R via Homebrew, don't stop at just brew uninstall R. Run brew autoremove afterward to clear out any orphaned dependencies that might still be hanging around. I've seen cases where leftover dependencies caused conflicts with other packages until I ran this cleanup step. It's the digital equivalent of sweeping up after a renovation.

Verification Beyond Terminal: The which R command is great, but I always go one step further by actually trying to launch RStudio and running R --version in Terminal. Sometimes, partial installations can still make these commands appear to work when they're actually broken. Also, check your Applications and Utilities folders manually—you'd be surprised how often files sneak into unexpected places.

Frequently asked questions

Wrapping up and next steps

Uninstalling R from your Mac doesn’t have to be a hassle—you’ve now got the know-how to cleanly remove it and free up space without leaving behind pesky leftover files.

Whether you’re switching to another tool, decluttering your system, or just starting fresh, you’ve taken a big step toward a streamlined workspace. 🎉

Ready to put this to use? Go ahead and follow the steps—you’ve got this! And if you’re curious about other software or tools, now’s a great time to explore what else your Mac can do. Happy computing! 🚀