diff --git a/uninstall.sh b/uninstall.sh
index 4b461362a18..1300f5d2967 100755
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -243,6 +243,7 @@ remove_file_with_optional_sudo() {
   info "Removed $path"
 }
 
+# Stop NemoClaw helper services (e.g. Telegram bridge, cloudflared).
 stop_helper_services() {
   if [ -x "$SCRIPT_DIR/scripts/start-services.sh" ]; then
     run_optional "Stopped NemoClaw helper services" "$SCRIPT_DIR/scripts/start-services.sh" --stop
@@ -251,6 +252,7 @@ stop_helper_services() {
   remove_glob_paths "${TMP_ROOT}/nemoclaw-services-*"
 }
 
+# Stop openshell port-forward processes on the dashboard port.
 stop_openshell_forward_processes() {
   if ! command -v pgrep >/dev/null 2>&1; then
     warn "pgrep not found; skipping local OpenShell forward process cleanup."
@@ -281,6 +283,71 @@ stop_openshell_forward_processes() {
   done
 }
 
+# Kill orphaned openshell processes left behind after uninstall —
+# sandbox create, ssh-proxy, and related ssh sessions. (#1940)
+stop_orphaned_openshell_processes() {
+  if ! command -v pgrep >/dev/null 2>&1; then
+    warn "pgrep not found; skipping orphaned openshell process cleanup."
+    return 0
+  fi
+
+  local -a pids=()
+  local pid
+
+  # Scope to the original invoking user to avoid killing other users' processes
+  # on shared systems. Under sudo, SUDO_USER holds the real caller; fall back
+  # to LOGNAME, then id -un. (#1940)
+  local _user
+  _user="${SUDO_USER:-${LOGNAME:-$(id -un 2>/dev/null || echo "")}}"
+  local -a _pgrep_user=()
+  if [ -n "$_user" ]; then
+    _pgrep_user=(-u "$_user")
+  fi
+
+  # Collect openshell sandbox create, ssh-proxy, and related ssh processes.
+  while IFS= read -r pid; do
+    [ -n "$pid" ] || continue
+    pids+=("$pid")
+  done < <(pgrep "${_pgrep_user[@]}" -f "openshell (sandbox create|ssh-proxy)" 2>/dev/null || true)
+
+  # Also collect ssh processes whose command line references openshell.
+  # Match "openshell ssh-proxy" or "openshell-" (gateway name pattern) to
+  # avoid false positives on unrelated ssh sessions. User scoping via
+  # _pgrep_user provides an additional safety net.
+  local cmd
+  while IFS= read -r pid; do
+    [ -n "$pid" ] || continue
+    cmd="$(ps -p "$pid" -o args= 2>/dev/null)" || continue
+    if [[ "$cmd" == *"openshell ssh-proxy"* ]] || [[ "$cmd" == *"openshell-"* ]]; then
+      pids+=("$pid")
+    fi
+  done < <(pgrep "${_pgrep_user[@]}" -x ssh 2>/dev/null || true)
+
+  # Deduplicate
+  local -A seen=()
+  local -a unique_pids=()
+  for pid in "${pids[@]}"; do
+    if [ -z "${seen[$pid]:-}" ]; then
+      seen[$pid]=1
+      unique_pids+=("$pid")
+    fi
+  done
+
+  if [ "${#unique_pids[@]}" -eq 0 ]; then
+    info "No orphaned openshell processes found"
+    return 0
+  fi
+
+  for pid in "${unique_pids[@]}"; do
+    if kill "$pid" >/dev/null 2>&1 || kill -9 "$pid" >/dev/null 2>&1; then
+      info "Stopped orphaned openshell process $pid"
+    else
+      warn "Failed to stop orphaned openshell process $pid"
+    fi
+  done
+}
+
+# Remove OpenShell sandboxes, providers, and gateway.
 remove_openshell_resources() {
   if ! command -v openshell >/dev/null 2>&1; then
     warn "openshell not found; skipping gateway/provider/sandbox cleanup."
@@ -629,6 +696,7 @@ main() {
   step 1 "Stopping services"
   stop_helper_services
   stop_openshell_forward_processes
+  stop_orphaned_openshell_processes
 
   step 2 "OpenShell resources"
   remove_openshell_resources