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

To uninstall R on Mac completely, you’ll need more than just dragging the app to the trash—leftover files can haunt your system. ⚡ I’ve removed R from dozens of machines, and the key is knowing where it hides.

The R.app bundle in Applications is just the tip of the iceberg; libraries, configuration files, and Homebrew links lurk in hidden folders.

The process starts with the obvious: deleting R.app from Applications, but that’s only the first step. If you installed R via Homebrew, running brew uninstall r handles most of it—but you’ll still need to manually scrub residual files from /Library/Frameworks/ and ~/Library/R/.

I’ve seen users miss these, leaving behind half-installed packages that cause conflicts later.

You’ll end up with a clean slate, no phantom R processes running, and no leftover environment variables polluting your Terminal. The verification step—checking which R and scanning for lingering files—is where most people trip up, so I’ll walk you through every folder to inspect.

This method works whether you installed R from CRAN, Homebrew, or even an old .pkg installer.

For stubborn cases, tools like AppCleaner can automate the cleanup, but I prefer doing it manually to understand exactly what’s being removed. Once you’re done, you’ll have a Mac free of R’s digital footprint—ready for a fresh start or a different tool.

Here’s how to do it step by step without missing a thing.

What you need

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

Here’s how to cleanly remove R and all its associated files—no traces left behind.

Before uninstalling, ensure R isn’t running. Open Activity Monitor (Applications > Utilities) and look for any processes named R or Rscript. Select them and click the Quit Process button. This prevents conflicts during removal.

Also close RStudio or any other IDEs you use with R. Some IDEs create hidden preference files that need manual cleanup later. I always restart my Mac after this step to clear any lingering processes.

Locate the R.uninstall package, usually found in /Library/Frameworks/R.framework/Resources/. If you don’t see it, check Applications/R—older versions may include it there. Double-click the package and follow the on-screen prompts to remove R.

This step removes the core R installation, but it often misses libraries and configuration files. Don’t skip the next steps—those are where leftover files hide.

Open Terminal (Applications > Utilities) and run these commands one by one. First, remove user-specific libraries with: rm -rf ~/Library/R This deletes your personal R packages and settings. Next, clear system-wide libraries with: sudo rm -rf /Library/Frameworks/R.framework/Versions/ (Enter your admin password when prompted.)

For hidden configuration files, run: rm -rf ~/.Rprofile ~/.RData ~/.Rhistory These files store your R environment settings, workspace data, and command history. Skipping this step means future R installs will pull in old configurations.

Some R installations add system services for background tasks. Check for leftover launch items with: launchctl list | grep -i R If any appear, remove them using: sudo launchctl remove [servicename] Replace [servicename] with the exact output from the first command.

For older macOS versions, also check /Library/LaunchDaemons and ~/Library/LaunchAgents for any .plist files related to R. Delete them with: sudo rm -f /Library/LaunchDaemons/com.r.* This ensures no automated R processes restart after your uninstall.

Reboot your Mac to flush any remaining system caches. After restarting, open Terminal and run: which R If nothing appears, R is fully removed. To confirm, try installing R fresh from CRAN or the R Project website—this ensures no corrupted files interfere.

Real talk: If you reinstall and see errors about missing libraries, revisit Step 3. Sometimes files hide in unexpected places. A clean install should work smoothly after this process.

Tips & tricks for complete R removal on Mac

These tricks help ensure you don't miss any hidden files or services during your R uninstallation.

Double-check for hidden processes: In Step 1, don't just look for "R" in Activity Monitor—search for any processes containing "R" or "script" in their names. Sometimes R-related background tasks hide under different labels like "Rscript" or "Rgui." I once missed a process called "Rsession" that kept restarting R automatically after uninstall.

Backup important configurations first: Before running the Terminal commands in Step 3, consider backing up your ~/.Rprofile and ~/.RData files if they contain important workspace data. You can copy them to your Desktop with cp ~/.Rprofile ~/Desktop/Rprofile_backup. This is especially important if you've customized R settings or saved critical workspace data.

Use Spotlight for file searches: If you're unsure whether all R files are gone after Step 3, use macOS Spotlight (Command+Space) to search for "R" in your entire system. This catches any leftover files that might have slipped through the Terminal commands. I've found hidden preference files this way that were missed during standard removal.

Verify with a fresh Terminal session: After completing Step 5, open a new Terminal window (not just a new tab) and run which R again. Sometimes Terminal caches paths, so a fresh session ensures you're getting the most accurate result. This extra step gives you complete confidence that R is truly gone from your system.

Frequently asked questions

Wrapping up and next steps

Uninstalling R from your Mac doesn’t have to be a hassle—you’ve got this! 🎉 By following the steps above, you’ve successfully removed R and its leftover files, freeing up space and keeping your system clean.

Whether you’re switching to a different tool or simply decluttering, you’ve taken control of your software with confidence.

Now that you’re done, consider exploring lightweight alternatives like Python or Julia for data analysis, or dive into learning a new skill. Your Mac will thank you for the fresh start! 🚀