diff --git a/src/cli/vm.rs b/src/cli/vm.rs
index 83ea157..edf439f 100644
--- a/src/cli/vm.rs
+++ b/src/cli/vm.rs
@@ -119,8 +119,13 @@ pub struct StartArgs {
 
 #[derive(Args)]
 pub struct StopArgs {
-    /// VM name
-    pub name: String,
+    /// VM name (required unless --all is used)
+    #[arg(required_unless_present = "all")]
+    pub name: Option<String>,
+
+    /// Stop all running VMs
+    #[arg(long, conflicts_with = "name")]
+    pub all: bool,
 
     /// Force stop (SIGKILL)
     #[arg(long)]
@@ -181,8 +186,13 @@ pub struct UpdateConfigArgs {
 
 #[derive(Args)]
 pub struct DeleteArgs {
-    /// VM name
-    pub name: String,
+    /// VM name (required unless --all is used)
+    #[arg(required_unless_present = "all")]
+    pub name: Option<String>,
+
+    /// Delete all VMs
+    #[arg(long, conflicts_with = "name")]
+    pub all: bool,
 
     /// Force delete (kill if running)
     #[arg(long)]
@@ -777,15 +787,20 @@ fn start(args: &StartArgs, state_dir: &Path) -> anyhow::Result<()> {
 /// if --force) → wait for exit → SIGKILL if still alive → clean up network +
 /// socket → update metadata.
 fn stop(args: &StopArgs, state_dir: &Path) -> anyhow::Result<()> {
+    if args.all {
+        return stop_all(args.force, state_dir);
+    }
+
+    let name = args.name.as_deref().unwrap();
     let store = StateStore::new(state_dir.to_path_buf());
 
     // Load and validate VM state.
-    let mut metadata = vm::load(&store, &args.name)?;
+    let mut metadata = vm::load(&store, name)?;
     match metadata.status {
         VmStatus::Running | VmStatus::Paused => {}
         _ => {
             return Err(Error::VmWrongState {
-                name: args.name.clone(),
+                name: name.to_string(),
                 actual: metadata.status.to_string(),
                 expected: "running or paused".to_string(),
             }
@@ -797,9 +812,9 @@ fn stop(args: &StopArgs, state_dir: &Path) -> anyhow::Result<()> {
         anyhow::anyhow!(
             "vm '{}' is {} but has no PID — state may be corrupted\n\
              Hint: try 'ember vm delete --force {}' and recreate the VM",
-            args.name,
+            name,
             metadata.status,
-            args.name
+            name
         )
     })?;
 
@@ -810,7 +825,7 @@ fn stop(args: &StopArgs, state_dir: &Path) -> anyhow::Result<()> {
         println!("Force-stopping VM (pid {pid})...");
         Vm::force_stop(&metadata)?;
     } else {
-        println!("Stopping VM '{}'...", args.name);
+        println!("Stopping VM '{}'...", name);
         Vm::stop(&metadata)?;
     }
 
@@ -824,7 +839,36 @@ fn stop(args: &StopArgs, state_dir: &Path) -> anyhow::Result<()> {
     metadata.network = None;
     vm::save(&store, &metadata)?;
 
-    println!("VM '{}' stopped.", args.name);
+    println!("VM '{}' stopped.", name);
+    Ok(())
+}
+
+/// Stop all running/paused VMs.
+fn stop_all(force: bool, state_dir: &Path) -> anyhow::Result<()> {
+    let store = StateStore::new(state_dir.to_path_buf());
+    let vms = vm::list(&store)?;
+    let targets: Vec<_> = vms
+        .iter()
+        .filter(|v| matches!(v.status, VmStatus::Running | VmStatus::Paused))
+        .collect();
+
+    if targets.is_empty() {
+        println!("No running VMs to stop.");
+        return Ok(());
+    }
+
+    println!("Stopping {} VMs...", targets.len());
+    for metadata in &targets {
+        let stop_args = StopArgs {
+            name: Some(metadata.name.clone()),
+            all: false,
+            force,
+        };
+        if let Err(e) = stop(&stop_args, state_dir) {
+            eprintln!("warning: failed to stop '{}': {}", metadata.name, e);
+        }
+    }
+
     Ok(())
 }
 
@@ -1025,16 +1069,21 @@ fn update_config(args: &UpdateConfigArgs, state_dir: &Path) -> anyhow::Result<()
 ///
 /// Each cleanup step is idempotent — continues if the resource is already gone.
 fn delete(args: &DeleteArgs, state_dir: &Path) -> anyhow::Result<()> {
+    if args.all {
+        return delete_all(args.force, state_dir);
+    }
+
+    let name = args.name.as_deref().unwrap();
     let store = StateStore::new(state_dir.to_path_buf());
 
     // Load VM metadata (must exist).
-    let metadata = vm::load(&store, &args.name)?;
+    let metadata = vm::load(&store, name)?;
 
     // If the VM is running or paused, require --force.
     if matches!(metadata.status, VmStatus::Running | VmStatus::Paused) && !args.force {
         anyhow::bail!(
             "vm '{}' is {} — stop it first or use --force",
-            args.name,
+            name,
             metadata.status
         );
     }
@@ -1043,13 +1092,13 @@ fn delete(args: &DeleteArgs, state_dir: &Path) -> anyhow::Result<()> {
     // On macOS/APFS this always returns empty — forks are independent.
     let config: GlobalConfig = store.read(&store.config_path())?;
     let storage = Storage::new(&config);
-    let dependents = storage.storage_dependents(&args.name)?;
+    let dependents = storage.storage_dependents(name)?;
     if !dependents.is_empty() {
         if !args.force {
             anyhow::bail!(
                 "vm '{}' has dependent forks: {}\n\
                  Delete them first, or use --force to cascade-delete all dependents.",
-                args.name,
+                name,
                 dependents.join(", ")
             );
         }
@@ -1066,6 +1115,40 @@ fn delete(args: &DeleteArgs, state_dir: &Path) -> anyhow::Result<()> {
     Ok(())
 }
 
+/// Delete all VMs.
+fn delete_all(force: bool, state_dir: &Path) -> anyhow::Result<()> {
+    let store = StateStore::new(state_dir.to_path_buf());
+    let vms = vm::list(&store)?;
+
+    if vms.is_empty() {
+        println!("No VMs to delete.");
+        return Ok(());
+    }
+
+    if !force {
+        let running = vms
+            .iter()
+            .any(|v| matches!(v.status, VmStatus::Running | VmStatus::Paused));
+        if running {
+            anyhow::bail!("some VMs are still running — use --force to stop and delete them");
+        }
+    }
+
+    println!("Deleting {} VMs...", vms.len());
+    for metadata in &vms {
+        let delete_args = DeleteArgs {
+            name: Some(metadata.name.clone()),
+            all: false,
+            force,
+        };
+        if let Err(e) = delete(&delete_args, state_dir) {
+            eprintln!("warning: failed to delete '{}': {}", metadata.name, e);
+        }
+    }
+
+    Ok(())
+}
+
 /// Force-delete a VM: kill process, clean up network, destroy storage, remove state.
 ///
 /// Idempotent — each cleanup step continues if the resource is already gone.