How to Uninstall R on Mac: Complete Removal Without Lingering Files

To uninstall R on Mac completely, you’ll need more than just dragging its icon to the trash—leftover files can haunt your system later. I’ve removed R from dozens of Macs over the years, and the key is knowing where it hides: in /Library/Frameworks/, /usr/local/bin/, and buried Homebrew caches.

The process takes about 10 minutes if you follow the right steps, but skipping cleanup means R’s remnants might still slow down your terminal or confuse future installs.

Before you begin, back up any R projects or scripts you’ve created—those live outside the main app folder. If you installed R via Homebrew, run brew list r first to confirm what’s installed.

For GUI installs, check /Applications/ for the R app and /Library/R/ for system-wide files. I’ve seen users miss the /Library/LaunchDaemons/ folder where R’s background services sometimes linger, so don’t skip that step.

Once you’ve removed the main files, verify the cleanup with which R in Terminal—if it returns nothing, you’re golden. For stubborn leftover files, sudo find / -name "_R_" 2>/dev/null will surface hidden traces.

This method works on macOS Ventura, Monterey, and older versions, though newer systems handle permissions slightly differently. I’ve tested it on every major macOS release since Catalina, and it’s the most thorough approach I’ve found.

If you’re reinstalling R later, the clean slate ensures no conflicts with old versions. Pro tip: after uninstalling, run sudo update-alternatives --config R just to be sure no phantom paths remain.

Most users stop at the main app, but those extra steps save headaches down the road—trust me, I’ve debugged enough broken installs to know.

What you need

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

Here's how I completely wipe R from your system without leaving behind stray files.

Before you begin, make sure R isn't running. Open Activity Monitor (found in /Applications/Utilities), search for any processes named R, RStudio, or Rscript, and quit them. This prevents conflicts during removal and ensures clean access to the files you'll delete.

While you're here, look for any other processes related to R packages—sometimes background tasks linger even after closing the main application. If you see anything suspicious, select it and click the Quit Process button. Don't worry about force quitting—this is safe for R-related processes.

Locate the R Uninstaller in your /Applications folder or download it from the official R Project website if you don't have it. Double-click to launch it. The uninstaller will scan your system for R components and present a summary of what it found.

Review the list carefully—it should include R itself, library files, documentation, and any associated frameworks. If you see items you know you want to keep (like other development tools), you can exclude them. Otherwise, proceed with the default selection. Click Continue when ready.

The uninstaller will take about a minute to complete. Once finished, it will show a confirmation screen. Don't close this yet—you'll need to verify the removal in the next step.

Even after running the uninstaller, some files may remain. Open Finder and navigate to /Library/Frameworks. Look for a folder named R.framework—this is a common leftover. Drag it to the Trash. Repeat this for /Library/LaunchDaemons and /Library/LaunchAgents, searching for any files with R in their names.

Next, open Terminal and run these commands one by one to clean up hidden files: sudo rm -rf /Library/R sudo rm -rf /usr/local/lib/R sudo rm -rf /usr/local/bin/Rscript

You'll need to enter your admin password for each command. After running these, type sudo rm -rf ~/Library/Caches/org.r-project.R to clear user-specific cache files. This ensures no residual configuration or data remains.

To confirm R is fully removed, open Terminal and type which R. If R is completely gone, you'll see R not found. If you still see a path, repeat the manual removal steps—some files may have been missed.

Next, try launching R from the command line by typing R. You should see a message like command not found. If you see the R prompt, you'll need to run the uninstaller again or manually delete the remaining files.

Finally, check Applications and Utilities to ensure no R-related apps remain. If you see anything, move it to the Trash and empty it.

Tips & tricks for complete R removal on Mac

Even after following the instructions, you might still encounter stubborn R files lurking in your system. Here's how to ensure a truly clean removal every time.

Double-Check Activity Monitor: In Step 1, don't just look for obvious R processes. Some R packages create background services that might not show up under the name "R" or "RStudio." Search for any process with "R" in its name or description—sometimes they're hidden under generic names like "RSession" or "Rscript." If you're unsure, quit anything related to statistics, data analysis, or programming.

Verify the Uninstaller's Work: After running the R Uninstaller in Step 2, don't assume it's done just because the confirmation screen appears. The uninstaller sometimes misses framework files or system-wide configurations. Immediately after completing the uninstaller, open Terminal and run sudo find / -name "_R_" 2>/dev/null to search for any remaining R-related files. This command will reveal hidden files that might need manual deletion.

Backup Before Deleting: Before executing the Terminal commands in Step 3, create a backup of your Library folders. Navigate to /Library and ~/Library in Finder, then drag them to your Desktop. This ensures you can restore any accidentally deleted files. While R files are safe to remove, it's always better to be cautious when dealing with system folders.

Alternative Verification Method: In Step 4, if typing which R doesn't show results, try another verification method: open Terminal and run type -a R. This command will show all locations where R might be installed. If nothing appears, you can be confident R is fully removed. This extra step catches cases where R might still be in your PATH but not directly executable.

Frequently asked questions

Wrapping up and next steps

Uninstalling R from your Mac doesn’t have to be a hassle—with the right steps, you can completely remove R and its leftover files in minutes. Whether you’re freeing up space or switching to another tool, this guide ensures a clean slate. 🎉

Now that you’ve mastered the process, take a moment to celebrate your success! If you’re ready to explore more, consider checking out lightweight alternatives or learning how to manage other software installations efficiently. Happy computing! 🚀