diff --git a/README.md b/README.md
index 347cf2dc..da7d9f09 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,7 @@ Set `PREFIX` to install to `$PREFIX/bin/` directory. Defaults to `/usr/local`
 when run as root or `$HOME/.local` when run as a non-root user.
 
 Set `VERSION` to install a specific version. Defaults to the latest version.
+Set `VERSION=prerelease` to install the latest prerelease build.
 
 For example, to install version `v0.0.369` to a custom directory:
 
@@ -63,6 +64,10 @@ For example, to install version `v0.0.369` to a custom directory:
 curl -fsSL https://gh.io/copilot-install | VERSION="v0.0.369" PREFIX="$HOME/custom" bash
 ```
 
+If the install location is not already in your `PATH`, the script prompts you to
+add it to your shell profile. The install script does not modify your shell
+configuration unless you explicitly confirm it.
+
 Install with [Homebrew](https://formulae.brew.sh/cask/copilot-cli) (macOS and Linux):
 
 ```bash
@@ -95,6 +100,41 @@ npm install -g @github/copilot
 npm install -g @github/copilot@prerelease
 ```
 
+### Uninstallation
+
+If you installed with the install script on macOS or Linux, uninstall with:
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/github/copilot-cli/refs/heads/main/uninstall.sh | bash
+```
+
+Or:
+
+```bash
+wget -qO- https://raw.githubusercontent.com/github/copilot-cli/refs/heads/main/uninstall.sh | bash
+```
+
+Use `| sudo bash` to remove `/usr/local/bin/copilot`, or set `PREFIX` to remove
+`$PREFIX/bin/copilot`.
+
+The uninstall script only removes the installed `copilot` binary. If you
+previously added the install directory to your `PATH`, remove that shell profile
+entry manually if you no longer want it.
+
+If you installed with another package manager, uninstall with the same tool:
+
+```bash
+brew uninstall copilot-cli
+```
+
+```bash
+winget uninstall GitHub.Copilot
+```
+
+```bash
+npm uninstall -g @github/copilot
+```
+
 
 ### Launching the CLI
 
diff --git a/changelog.md b/changelog.md
index 2758725d..c168e006 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,6 @@
 ## 1.0.14 - 2026-03-31
 
+- Add a companion uninstall script for curl/wget installs and document scripted uninstall behavior
 - Images are correctly sent to Anthropic models when using BYOM
 - Model picker selection correctly overrides the --model flag for the current session
 - Terminal output no longer clears or jumps on error exit
diff --git a/uninstall.sh b/uninstall.sh
new file mode 100755
index 00000000..3c4a22c3
--- /dev/null
+++ b/uninstall.sh
@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+set -e
+
+# GitHub Copilot CLI Uninstallation Script
+# Usage: curl -fsSL https://gh.io/copilot-uninstall | bash
+#    or: wget -qO- https://gh.io/copilot-uninstall | bash
+# Use | sudo bash to run as root and remove from /usr/local/bin
+# Export PREFIX to remove from $PREFIX/bin/ directory (default: /usr/local for
+# root, $HOME/.local for non-root), e.g., export PREFIX=$HOME/custom to remove
+# from $HOME/custom/bin
+
+echo "Uninstalling GitHub Copilot CLI..."
+
+# Detect platform
+case "$(uname -s || echo "")" in
+  Darwin*|Linux*) ;;
+  *)
+    if command -v winget >/dev/null 2>&1; then
+      echo "Windows detected. Uninstalling via winget..."
+      winget uninstall GitHub.Copilot
+      exit $?
+    else
+      echo "Error: Windows detected but winget not found. Please remove GitHub Copilot CLI using the package manager you installed it with." >&2
+      exit 1
+    fi
+    ;;
+esac
+
+# Check if running as root, fallback to non-root
+if [ "$(id -u 2>/dev/null || echo 1)" -eq 0 ]; then
+  PREFIX="${PREFIX:-/usr/local}"
+else
+  PREFIX="${PREFIX:-$HOME/.local}"
+fi
+INSTALL_DIR="$PREFIX/bin"
+TARGET="$INSTALL_DIR/copilot"
+
+if [ ! -e "$TARGET" ]; then
+  echo "Notice: No copilot binary found at $TARGET."
+
+  if command -v copilot >/dev/null 2>&1; then
+    FOUND_PATH="$(command -v copilot)"
+    echo "Another copilot binary is still available at $FOUND_PATH."
+    echo "If you installed it with Homebrew, npm, or another package manager, uninstall it with that tool."
+  fi
+
+  exit 0
+fi
+
+if [ ! -w "$TARGET" ] && [ "$(id -u 2>/dev/null || echo 1)" -ne 0 ]; then
+  echo "Error: Could not remove $TARGET. You may not have write permissions." >&2
+  echo "Try running this script with sudo or set PREFIX to the installation prefix used previously." >&2
+  exit 1
+fi
+
+rm -f "$TARGET"
+echo "✓ Removed $TARGET"
+
+if [ -d "$INSTALL_DIR" ] && [ -z "$(ls -A "$INSTALL_DIR" 2>/dev/null)" ]; then
+  rmdir "$INSTALL_DIR" 2>/dev/null || true
+fi
+
+echo ""
+echo "Uninstall complete."
+echo "If you previously added $INSTALL_DIR to your PATH, you can remove that entry from your shell profile manually."