Mac R Uninstall: Complete Removal Without Leftover Files

To completely uninstall R from your Mac, you’ll need more than just dragging the app to the Trash—leftover files can haunt your system for months. ⚡ I’ve helped colleagues clean up R installations that left behind half a dozen hidden folders, and the fix always starts with these three critical steps: verifying your installation method, backing up any critical projects, and knowing exactly where R hides its files.

The first hurdle is identifying how R was installed—was it through the official installer, Homebrew, or maybe even a third-party package? Each method leaves different remnants behind. For example, Homebrew installs often nestle in /Library/Frameworks/R.framework, while manual installs scatter files across ~/Library/R and /usr/local/bin.

I’ve seen users miss these spots entirely, leaving behind configuration files that cause conflicts when reinstalling later.

Once you’ve located everything, the actual removal is straightforward but requires precision. You’ll delete the main R.app, any RStudio bundles, and then scrub through system and user libraries with Terminal commands like brew uninstall r or sudo rm -rf for stubborn directories.

The key is patience—rushing here can leave behind orphaned dependencies that break other software.

After wiping everything clean, you’ll want to verify the removal by checking your system paths and running which R in Terminal to confirm nothing remains. If you’re reinstalling later, start fresh with the official installer—this avoids the "but it worked before!" frustration that comes from partial cleanups.

Trust me, I’ve seen it all in the Denver tech center.

What you need

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

Here's the foolproof method I use to purge R and all its remnants from macOS.

Open Activity Monitor from Applications > Utilities. In the search bar, type "R" to filter processes. You'll likely see RStudio, R, or Rscript running. Select each and click the Quit Process button (the stop sign icon).

If any process refuses to quit, force quit it by selecting it and choosing Force Quit from the menu. This ensures no background scripts or sessions remain active during removal. I always do this first—it prevents permission errors later when deleting system files.

Open Finder and navigate to /Applications. Locate the R application (usually named just "R" or "R-x.x.x.app") and drag it to the Trash. If prompted about permissions, enter your admin password.

Next, open Terminal and run these commands one by one to remove system-wide libraries and configurations: sudo rm -rf /Library/Frameworks/R.framework sudo rm -rf /Library/R sudo rm -rf /usr/local/bin/R sudo rm -rf /usr/local/lib/R Verify each deletion completes without errors—if you see "No such file or directory," that's fine, just means the path didn't exist.

In Terminal, run these commands to remove user-specific R installations and configurations: rm -rf ~/Library/R rm -rf ~/Library/Preferences/org.r-project.R.plist rm -rf ~/.R rm -rf ~/.Rprofile rm -rf ~/.RData These commands target your personal R workspace, cache, and preferences—critical for complete removal.

If you used RStudio, also delete its application from Applications and remove its preferences with: rm -rf ~/Library/Application Support/RStudio rm -rf ~/Library/Preferences/com.rstudio.rstudio.plist

Open Terminal and run which R. If nothing appears in the output, R is successfully removed from your system path. Next, try launching R by typing R—you should see "command not found."

For thoroughness, search your system for remaining R files using: sudo find / -name "_R_" 2>/dev/null This will list any lingering files. Delete any remaining R-related files manually. The goal is zero traces—no hidden configuration files or partial installations.

Restart your Mac to ensure all processes have terminated. After reboot, open Terminal again and verify with: ls /Applications | grep -i R ls ~/Library/R 2>/dev/null Both commands should return no output. If you see anything, repeat the removal steps for those specific paths.

Here's the thing—some R packages install system-wide dependencies. If you plan to reinstall R later, consider using a package manager like Homebrew for cleaner installations. It makes future updates and removals much simpler.

Tips & tricks for complete R removal on Mac

Real talk: Even after following the steps perfectly, some R remnants can linger if you don't know where to look. Here's what I've learned from years of system cleanup—these tricks ensure your Mac is truly R-free.

Process Hunting: In Step 1, don't stop at just "R" in Activity Monitor. Look for related processes like "Rscript" or "RStudio" that might be running background tasks. I once missed "Rscript" running a scheduled job, and it kept reinstalling packages automatically. Also check for any "R" processes under your username in Activity Monitor's "User" column—these are often hidden from the main list.

Terminal Command Order Matters: When running the removal commands in Step 2 and Step 3, execute them in the exact order shown. Starting with system-wide paths (/Library) before user paths (~/) prevents permission errors. I learned this the hard way when I tried deleting ~/Library/R before /Library/R—my terminal got stuck with "Operation not permitted" errors for 20 minutes. Save yourself that headache.

Hidden File Search Strategy: For Step 4's thorough search, I recommend running the sudo find command twice—first with the case-sensitive "R" (sudo find / -name "R" 2>/dev/null), then with case-insensitive search (sudo find / -iname "r" 2>/dev/null). This catches variations like "rstudio", "Rscript", or even "R-3.6.3" in filenames that the basic search might miss. The double search caught a hidden "rstudio-workspace" directory in my ~/Library that I would have otherwise missed.

Post-Reboot Verification: After Step 5, don't just check the two commands mentioned. Open Terminal and run echo $PATH to verify none of the R installation paths remain in your system path. I once had a path like /usr/local/bin still containing R executables even after deletion, which caused issues when reinstalling later. Also check man R—if it shows anything, you've missed some man pages that need manual removal.

Frequently asked questions

Got questions about uninstalling R on your Mac? Here are some of the most common concerns—and their answers—to help you navigate the process smoothly.

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 it and any leftover files in minutes! Whether you’re freeing up space or switching to a different tool, you’ve got this! 🎉

Now that you’re all set, consider exploring other data tools or cleaning up your system further. Need help? Check out R’s official documentation or dive into learning a new programming language—your next adventure awaits! 🚀