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

Uninstalling R on Mac can leave behind files that haunt your system like a ghost in the machine. ⚡ I’ve spent hours cleaning up after incomplete removals, and I’ll show you the right way—no lingering traces.

The key is knowing where R hides its files, whether installed via Homebrew, CRAN, or RStudio.

First, check your installation method: run brew list in Terminal to see if R was installed via Homebrew. If it was, brew uninstall r does most of the work, but you’ll still need to manually delete /Library/Frameworks/R.framework and any leftover config files in ~/.R.

For RStudio, drag it to the Trash—simple, but don’t forget to clear its preferences folder in ~/Library/Application Support/RStudio.

You’ll end up with a completely clean slate, no phantom R processes running in the background, and no broken dependencies from half-removed packages. The cleanup takes about 10 minutes if you follow the steps carefully, and I’ll walk you through each one—including how to verify nothing’s left behind.

Fair warning: some R packages might have installed system-wide libraries, so back up any critical work before diving in. I’ll also cover how to spot lingering files and what to do if Terminal throws permission errors—because even the cleanest uninstall can hit a snag.

What you need

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

Here’s how I ensure R and all its remnants vanish—no trace left behind.

Before touching anything, force-quit all active R sessions. Open Activity Monitor from your Applications folder, then navigate to the CPU tab. Look for any processes named R, RStudio, or Rscript—select them and click the Quit Process button (🛑). This prevents corruption during deletion.

If you’re unsure, search for R in the Spotlight menu (Cmd + Space) to confirm nothing’s running. I’ve seen stubborn sessions linger, so double-checking saves headaches later.

Drag the R.app and RStudio.app (if installed) from your Applications folder to the Trash. Empty the Trash immediately to free up space. This removes the main executables, but hidden files remain—don’t skip the next steps.

For RStudio specifically, also delete its configuration files in ~/Library/Application Support/RStudio/. Open Finder, press Cmd + Shift + G, paste that path, and delete the entire folder. This clears cached projects and settings.

Open Terminal and run these commands one by one. First, list all R libraries with ls ~/Library/R/. You’ll see folders like library/ and Preferences/. Delete them with sudo rm -rf ~/Library/R/—this removes all installed packages and settings.

Next, check for global R files with ls /Library/Frameworks/R.framework/. If present, remove them with sudo rm -rf /Library/Frameworks/R.framework/. This ensures no system-wide remnants interfere with future installs.

Run sudo rm -rf /usr/local/lib/R to purge any leftover libraries in system directories. Then, verify no R-related paths remain with mdfind -name "R*". This command searches your entire drive for R-related files—delete anything listed.

For stubborn permissions, use sudo chmod -R 755 / to reset directory permissions, then retry deletions. This step is critical if you’re reinstalling R later—lingering files can cause conflicts.

Restart your Mac to flush system caches. After reboot, open Terminal and run which R. If nothing appears, R is fully removed. Also check Applications and Library folders—no R files should remain.

To test, try installing R fresh from CRAN. If the installer runs cleanly, you’ve succeeded. I’ve seen users miss /Library/Frameworks/ files, so this final check confirms a thorough cleanup.

Tips & tricks for complete R removal on Mac

These targeted strategies ensure no trace of R lingers after uninstallation—critical for clean reinstalls or system maintenance.

Backup First: Before executing any deletion commands, create a full system backup using Time Machine. I’ve seen users accidentally remove critical system files when cleaning up R remnants. This one-time precaution saves hours of recovery work if something goes wrong. Store the backup externally—don’t rely on your Mac’s internal drive.

Terminal Command Safety: When running sudo rm -rf commands in Step 3 and Step 4, double-check each path before executing. I recommend typing the full command manually rather than copy-pasting—this prevents accidental deletions of wrong directories. For extra safety, add echo before each command to preview what will be deleted (e.g., echo sudo rm -rf ~/Library/R/).

Permissions Pitfalls: If you encounter "Permission denied" errors during deletions, don’t force the issue with brute-force commands. Instead, use sudo chmod -R 755 / as specified in Step 4, but target specific directories first. For example, run sudo chmod -R 755 ~/Library/R/ before attempting deletion. This maintains system stability while allowing proper cleanup.

Hidden File Hunter: The mdfind -name "R" command in Step 4 is your best friend for finding hidden R files. Run this command twice—once before deletion to document what exists, and once after to verify complete removal. I’ve discovered orphaned files in unexpected locations like /usr/local/bin/ and /Library/Developer/ using this method. Consider redirecting output to a text file for review: mdfind -name "R" > ~/Desktop/R_files.txt.

Frequently asked questions

Got questions about uninstalling R on your Mac? You’re not alone! Here are some of the most common concerns—and their straightforward answers—to make the process smoother for you.

Wrapping up and next steps

Uninstalling R from your Mac doesn’t have to be complicated! By following these steps—whether you’re removing RStudio, clearing leftover files, or verifying the cleanup—you can fully reset your system with confidence. 🎉 Whether you’re switching to another tool or just decluttering, you’ve now taken control of your Mac’s software.

Ready for the next step? Explore lightweight alternatives like Python or Julia, or dive into reinstalling R with a fresh setup. Your tech toolkit just got a little more organized—keep it that way! 🚀