diff --git a/staging/src/k8s.io/cli-runtime/pkg/printers/json.go b/staging/src/k8s.io/cli-runtime/pkg/printers/json.go
index bb5bec7488c..fef60eb944c 100644
--- a/staging/src/k8s.io/cli-runtime/pkg/printers/json.go
+++ b/staging/src/k8s.io/cli-runtime/pkg/printers/json.go
@@ -68,7 +68,10 @@ func (p *JSONPrinter) PrintObj(obj runtime.Object, w io.Writer) error {
 // YAMLPrinter is an implementation of ResourcePrinter which outputs an object as YAML.
 // The input object is assumed to be in the internal version of an API and is converted
 // to the given version first.
-type YAMLPrinter struct{}
+// If PrintObj() is called multiple times, objects are separated with a '---' separator.
+type YAMLPrinter struct {
+	printCount int64
+}
 
 // PrintObj prints the data as YAML.
 func (p *YAMLPrinter) PrintObj(obj runtime.Object, w io.Writer) error {
@@ -79,6 +82,13 @@ func (p *YAMLPrinter) PrintObj(obj runtime.Object, w io.Writer) error {
 		return fmt.Errorf(InternalObjectPrinterErr)
 	}
 
+	count := atomic.AddInt64(&p.printCount, 1)
+	if count > 1 {
+		if _, err := w.Write([]byte("---\n")); err != nil {
+			return err
+		}
+	}
+
 	switch obj := obj.(type) {
 	case *runtime.Unknown:
 		data, err := yaml.JSONToYAML(obj.Raw)