How To Uninstall R On Mac: Complete Removal Without Leftover Files

Uninstalling R on your Mac should take less than 15 minutes, but I’ve seen users spend hours chasing leftover files. ⚡ The key is knowing where R hides its traces—especially if you installed it via Homebrew, RStudio, or the traditional .pkg installer.

I’ve helped dozens of developers clean up messy R installations, and the difference between a thorough removal and a half-finished job is all in the details.

Before you start, back up any R projects or scripts you want to keep—the uninstall process won’t touch your working files, but it’s good practice. Close RStudio, quit Terminal if it’s running, and make sure you’re logged in as an admin.

If you installed R through Homebrew, you’ll need Terminal for the cleanup; otherwise, you can do most of this in Finder. The worst mistake I’ve seen? Skipping the /Library/ folder and leaving behind framework files that slow down future installs.

You’ll drag R and RStudio apps to Trash, run a few precise terminal commands to scrub Homebrew-installed files, and delete hidden preference files that keep R from being fully removed. The verification step—checking /Applications/ and running R --version in Terminal—will show you whether you’ve truly wiped R clean.

Trust me, that last check saves headaches later when you try to reinstall.

Even after deletion, some users report seeing R-related files lingering in their ~/.R/ directory or in system caches. That’s why I include the extra cleanup steps—like resetting environment variables—that most guides skip.

Once you’re done, your Mac will be as clean as the day you installed it, ready for whatever comes next. And if you’re reinstalling later, you’ll appreciate not having to fight through old configuration conflicts.

What you need

Step-by-Step instructions for removing R completely from macOS

Here's how to cleanly purge R and all associated files from your Mac without leaving traces behind.

Open Finder and navigate to Applications. Locate the R application and drag it to the Trash. Empty the Trash immediately to remove the main installation. This removes the core application but leaves system files and libraries behind.

Next, open Terminal (Applications > Utilities) and run the following command to execute R's built-in uninstall script: R -e "uninstallR()". This initiates the official uninstaller, which removes most system-level components. Wait for the process to complete—this may take 1-2 minutes depending on your system speed.

Verify the uninstaller completed by checking for R.framework in /Library/Frameworks/. If it still exists, proceed to the next step. This framework is often missed by the basic uninstaller.

In Terminal, execute these commands one by one to scrub leftover files. First, remove the remaining framework with: sudo rm -rf /Library/Frameworks/R.framework. Enter your admin password when prompted—this removes the core framework that stores R's libraries and executables.

Next, clean up user-specific files with: rm -rf ~/Library/R. This removes your personal R libraries and configurations. Be cautious—this command targets your user directory only and won’t affect system-wide files.

For system-wide library remnants, run: sudo rm -rf /Library/R. Confirm the directories are gone by checking both ~/Library/R and /Library/R in Finder. If any files remain, proceed to the next step.

R leaves behind configuration files in hidden directories. Run this command to remove them: rm -rf ~/.R. This deletes your R profile, history, and cache files stored in your home directory. These files can interfere with reinstallations or cause conflicts with other statistical packages.

Next, clear system caches with: sudo rm -rf /var/db/receipts/com.r-project.R.bom and sudo rm -rf /var/db/receipts/com.r-project.R.plist. These receipt files track R's installation history in macOS and can prevent clean reinstalls if left behind.

Finally, verify no R-related processes are running with: ps aux | grep -i R. If any processes appear, force-quit them using kill -9 [PID], replacing [PID] with the actual process ID from the previous command.

To confirm R is fully removed, attempt to reinstall it. Open Terminal and run: R --version. If you see a "command not found" error, R is successfully purged. If you still see version information, repeat Step 2 and Step 3 carefully.

For a fresh start, download the latest version of R from the CRAN website and install it using the default settings. This ensures no residual files interfere with your new installation. The reinstall process should now proceed without errors or conflicts.

Here's the thing—some users report lingering issues with RStudio or other IDEs after uninstalling R. If you use RStudio, open it and go to Tools > Global Options > R Packages to clear any cached package information. This prevents IDE-specific remnants from causing problems later.

Tips & tricks for complete R uninstallation on macOS

Took me a while to figure out these essential steps—here's how to avoid the most common pitfalls when purging R from your Mac.

Timing Tip for Step 1: Those 1-2 minutes for the uninstallR() script to run might feel like an eternity, but don't interrupt it! I learned this the hard way after killing the process early and leaving orphaned files behind. Let it complete fully—your patience here prevents headaches later. The script handles most system-level cleanup, but always verify R.framework is gone from /Library/Frameworks/ afterward.

Framework Verification: After running uninstallR(), I can't stress enough how important it is to check for R.framework in /Library/Frameworks/. This framework often survives the basic uninstaller and contains critical libraries. If it's still there, you're not truly clean—skip to Step 2 immediately. Pro tip: Use Finder's "Go to Folder" (Command+Shift+G) to navigate directly to this location and avoid Terminal confusion.

Command Sequence Strategy: When executing those sudo rm -rf commands in Step 2, run them one at a time and double-check each directory's existence before deletion. I once accidentally removed a critical system file by rushing through—always verify paths first. For extra caution, open a second Terminal window to confirm directories exist before executing the removal commands. The ~/Library/R and /Library/R directories are particularly sneaky—they often hide in plain sight.

Process Verification: The final ps aux | grep -i R command in Step 3 is your last line of defense. I've seen R processes linger even after all files appear deleted. If you find any, don't just kill them—check why they're running. Some might be remnants of RStudio or other IDEs. For stubborn processes, use kill -9 [PID] only as a last resort, and always verify they're truly gone with a second ps aux check.

Frequently asked questions

Wrapping up and next steps

Uninstalling R from your Mac doesn’t have to be a headache—you’ve just taken control of your system’s clutter! By following these steps, you’ve ensured a clean removal of R and its leftover files, freeing up space and keeping your workflow smooth. 🎉

Now that you’ve mastered this task, why not explore other ways to optimize your Mac? Whether it’s managing apps, organizing files, or diving into new software, your tech skills are growing—keep it up! 🚀

Next step: Check out our guide on speeding up your Mac for even better performance!