diff --git a/staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/BUILD b/staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/BUILD
index 0eb833b5fd8..01cdba16bc9 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/BUILD
+++ b/staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/BUILD
@@ -37,6 +37,7 @@ go_test(
     embed = [":go_default_library"],
     deps = [
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/unstructured:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1beta1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/diff:go_default_library",
diff --git a/staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/tableconvertor_test.go b/staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/tableconvertor_test.go
index 98b47486793..eab0beb000b 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/tableconvertor_test.go
+++ b/staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/tableconvertor_test.go
@@ -24,6 +24,7 @@ import (
 	"time"
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/util/diff"
@@ -201,6 +202,225 @@ func Test_convertor_ConvertToTable(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "Return table with additional column containing multiple string values",
+			fields: fields{
+				headers: []metav1.TableColumnDefinition{
+					{Name: "name", Type: "string"},
+					{Name: "valueOnly", Type: "string"},
+					{Name: "single1", Type: "string"},
+					{Name: "single2", Type: "string"},
+					{Name: "multi", Type: "string"},
+				},
+				additionalColumns: []*jsonpath.JSONPath{
+					newJSONPath("valueOnly", "{.spec.servers[0].hosts[0]}"),
+					newJSONPath("single1", "{.spec.servers[0].hosts}"),
+					newJSONPath("single2", "{.spec.servers[1].hosts}"),
+					newJSONPath("multi", "{.spec.servers[*].hosts}"),
+				},
+			},
+			args: args{
+				obj: &unstructured.Unstructured{
+					Object: map[string]interface{}{
+						"apiVersion": "example.istio.io/v1alpha1",
+						"kind":       "Blah",
+						"metadata": map[string]interface{}{
+							"name": "blah",
+						},
+						"spec": map[string]interface{}{
+							"servers": []map[string]interface{}{
+								{"hosts": []string{"foo"}},
+								{"hosts": []string{"bar", "baz"}},
+							},
+						},
+					},
+				},
+				tableOptions: nil,
+			},
+			want: &metav1.Table{
+				ColumnDefinitions: []metav1.TableColumnDefinition{
+					{Name: "name", Type: "string"},
+					{Name: "valueOnly", Type: "string"},
+					{Name: "single1", Type: "string"},
+					{Name: "single2", Type: "string"},
+					{Name: "multi", Type: "string"},
+				},
+				Rows: []metav1.TableRow{
+					{
+						Cells: []interface{}{
+							"blah",
+							"foo",
+							`["foo"]`,
+							`["bar","baz"]`,
+							`["foo"]`, // TODO: TableConverter should be changed so that the response is this: `["foo"] ["bar","baz"]`,
+						},
+						Object: runtime.RawExtension{
+							Object: &unstructured.Unstructured{
+								Object: map[string]interface{}{
+									"apiVersion": "example.istio.io/v1alpha1",
+									"kind":       "Blah",
+									"metadata": map[string]interface{}{
+										"name": "blah",
+									},
+									"spec": map[string]interface{}{
+										"servers": []map[string]interface{}{
+											{"hosts": []string{"foo"}},
+											{"hosts": []string{"bar", "baz"}},
+										},
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+		{
+			name: "Return table with additional column containing multiple integer values as string",
+			fields: fields{
+				headers: []metav1.TableColumnDefinition{
+					{Name: "name", Type: "string"},
+					{Name: "valueOnly", Type: "string"},
+					{Name: "single1", Type: "string"},
+					{Name: "single2", Type: "string"},
+					{Name: "multi", Type: "string"},
+				},
+				additionalColumns: []*jsonpath.JSONPath{
+					newJSONPath("valueOnly", "{.spec.foo[0].bar[0]}"),
+					newJSONPath("single1", "{.spec.foo[0].bar}"),
+					newJSONPath("single2", "{.spec.foo[1].bar}"),
+					newJSONPath("multi", "{.spec.foo[*].bar}"),
+				},
+			},
+			args: args{
+				obj: &unstructured.Unstructured{
+					Object: map[string]interface{}{
+						"apiVersion": "example.istio.io/v1alpha1",
+						"kind":       "Blah",
+						"metadata": map[string]interface{}{
+							"name": "blah",
+						},
+						"spec": map[string]interface{}{
+							"foo": []map[string]interface{}{
+								{"bar": []int64{1}},
+								{"bar": []int64{2, 3}},
+							},
+						},
+					},
+				},
+				tableOptions: nil,
+			},
+			want: &metav1.Table{
+				ColumnDefinitions: []metav1.TableColumnDefinition{
+					{Name: "name", Type: "string"},
+					{Name: "valueOnly", Type: "string"},
+					{Name: "single1", Type: "string"},
+					{Name: "single2", Type: "string"},
+					{Name: "multi", Type: "string"},
+				},
+				Rows: []metav1.TableRow{
+					{
+						Cells: []interface{}{
+							"blah",
+							"1",
+							"[1]",
+							"[2,3]",
+							"[1]", // TODO: TableConverter should be changed so that the response is this: `[1] [2,3]`,
+						},
+						Object: runtime.RawExtension{
+							Object: &unstructured.Unstructured{
+								Object: map[string]interface{}{
+									"apiVersion": "example.istio.io/v1alpha1",
+									"kind":       "Blah",
+									"metadata": map[string]interface{}{
+										"name": "blah",
+									},
+									"spec": map[string]interface{}{
+										"foo": []map[string]interface{}{
+											{"bar": []int64{1}},
+											{"bar": []int64{2, 3}},
+										},
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+		{
+			name: "Return table with additional column containing multiple integer values",
+			fields: fields{
+				headers: []metav1.TableColumnDefinition{
+					{Name: "name", Type: "string"},
+					{Name: "valueOnly", Type: "integer"},
+					{Name: "single1", Type: "integer"},
+					{Name: "single2", Type: "integer"},
+					{Name: "multi", Type: "integer"},
+				},
+				additionalColumns: []*jsonpath.JSONPath{
+					newJSONPath("valueOnly", "{.spec.foo[0].bar[0]}"),
+					newJSONPath("single1", "{.spec.foo[0].bar}"),
+					newJSONPath("single2", "{.spec.foo[1].bar}"),
+					newJSONPath("multi", "{.spec.foo[*].bar}"),
+				},
+			},
+			args: args{
+				obj: &unstructured.Unstructured{
+					Object: map[string]interface{}{
+						"apiVersion": "example.istio.io/v1alpha1",
+						"kind":       "Blah",
+						"metadata": map[string]interface{}{
+							"name": "blah",
+						},
+						"spec": map[string]interface{}{
+							"foo": []map[string]interface{}{
+								{"bar": []int64{1}},
+								{"bar": []int64{2, 3}},
+							},
+						},
+					},
+				},
+				tableOptions: nil,
+			},
+			want: &metav1.Table{
+				ColumnDefinitions: []metav1.TableColumnDefinition{
+					{Name: "name", Type: "string"},
+					{Name: "valueOnly", Type: "integer"},
+					{Name: "single1", Type: "integer"},
+					{Name: "single2", Type: "integer"},
+					{Name: "multi", Type: "integer"},
+				},
+				Rows: []metav1.TableRow{
+					{
+						Cells: []interface{}{
+							"blah",
+							int64(1),
+							nil, // TODO: Seems like this should either return some data or return an error, not just be nil
+							nil, // TODO: Seems like this should either return some data or return an error, not just be nil
+							nil, // TODO: Seems like this should either return some data or return an error, not just be nil
+						},
+						Object: runtime.RawExtension{
+							Object: &unstructured.Unstructured{
+								Object: map[string]interface{}{
+									"apiVersion": "example.istio.io/v1alpha1",
+									"kind":       "Blah",
+									"metadata": map[string]interface{}{
+										"name": "blah",
+									},
+									"spec": map[string]interface{}{
+										"foo": []map[string]interface{}{
+											{"bar": []int64{1}},
+											{"bar": []int64{2, 3}},
+										},
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -219,3 +439,9 @@ func Test_convertor_ConvertToTable(t *testing.T) {
 		})
 	}
 }
+
+func newJSONPath(name string, jsonPathExpression string) *jsonpath.JSONPath {
+	jp := jsonpath.New(name)
+	_ = jp.Parse(jsonPathExpression)
+	return jp
+}