diff --git a/PendingReleaseNotes.md b/PendingReleaseNotes.md
index b4fabb66f..61686484f 100644
--- a/PendingReleaseNotes.md
+++ b/PendingReleaseNotes.md
@@ -6,5 +6,6 @@
 
 - deploy: podSecurityContexts can be configured for ceph-csi-cephfs chart in [PR](https://github.com/ceph/ceph-csi/pull/4664).
 - deploy: podSecurityContexts can be configured for ceph-csi-rbd chart in [PR](https://github.com/ceph/ceph-csi/pull/4668)
+- deploy: instanceID can be optionally configured for ceph-csi charts in [PR](https://github.com/ceph/ceph-csi/pull/4666)
 
 ## NOTE
diff --git a/charts/ceph-csi-cephfs/README.md b/charts/ceph-csi-cephfs/README.md
index 5958d1a67..323bd7cdc 100644
--- a/charts/ceph-csi-cephfs/README.md
+++ b/charts/ceph-csi-cephfs/README.md
@@ -200,6 +200,7 @@ charts and their default values.
 | `selinuxMount`                                | Mount the host /etc/selinux inside pods to support selinux-enabled filesystems                                                                                                      | `true`                                            |
 | `CSIDriver.fsGroupPolicy` | Specifies the fsGroupPolicy for the CSI driver object | `File` |
 | `CSIDriver.seLinuxMount` | Specify for efficient SELinux volume relabeling | `true` |
+| `instanceID`                                   | Unique ID distinguishing this instance of Ceph CSI among other instances, when sharing Ceph clusters across CSI instances for provisioning. | ` ` |
 
 ### Command Line
 
diff --git a/charts/ceph-csi-cephfs/templates/nodeplugin-daemonset.yaml b/charts/ceph-csi-cephfs/templates/nodeplugin-daemonset.yaml
index 5da5ca165..ed984017b 100644
--- a/charts/ceph-csi-cephfs/templates/nodeplugin-daemonset.yaml
+++ b/charts/ceph-csi-cephfs/templates/nodeplugin-daemonset.yaml
@@ -59,6 +59,9 @@ spec:
             - "--endpoint=$(CSI_ENDPOINT)"
             - "--v={{ .Values.logLevel }}"
             - "--drivername=$(DRIVER_NAME)"
+{{- if .Values.instanceID }}
+            - "--instanceid={{ .Values.instanceID }}"
+{{- end }}
 {{- if .Values.nodeplugin.profiling.enabled }}
             - "--enableprofiling={{ .Values.nodeplugin.profiling.enabled }}"
 {{- end }}
diff --git a/charts/ceph-csi-cephfs/templates/provisioner-deployment.yaml b/charts/ceph-csi-cephfs/templates/provisioner-deployment.yaml
index 685e39b66..c6c7c8278 100644
--- a/charts/ceph-csi-cephfs/templates/provisioner-deployment.yaml
+++ b/charts/ceph-csi-cephfs/templates/provisioner-deployment.yaml
@@ -79,6 +79,9 @@ spec:
             - "--endpoint=$(CSI_ENDPOINT)"
             - "--v={{ .Values.logLevel }}"
             - "--drivername=$(DRIVER_NAME)"
+{{- if .Values.instanceID }}
+            - "--instanceid={{ .Values.instanceID }}"
+{{- end }}
 {{- if .Values.provisioner.profiling.enabled }}
             - "--enableprofiling={{ .Values.provisioner.profiling.enabled }}"
 {{- end }}
diff --git a/charts/ceph-csi-cephfs/values.yaml b/charts/ceph-csi-cephfs/values.yaml
index 3626dd17e..b3b7464ab 100644
--- a/charts/ceph-csi-cephfs/values.yaml
+++ b/charts/ceph-csi-cephfs/values.yaml
@@ -372,3 +372,6 @@ configMapName: ceph-csi-config
 externallyManagedConfigmap: false
 # Name of the configmap used for ceph.conf
 cephConfConfigMapName: ceph-config
+# Unique ID distinguishing this instance of Ceph CSI among other instances,
+# when sharing Ceph clusters across CSI instances for provisioning
+# instanceID: default
diff --git a/charts/ceph-csi-rbd/README.md b/charts/ceph-csi-rbd/README.md
index 7caddbf66..6ae069d5d 100644
--- a/charts/ceph-csi-rbd/README.md
+++ b/charts/ceph-csi-rbd/README.md
@@ -229,6 +229,7 @@ charts and their default values.
 | `selinuxMount`                                | Mount the host /etc/selinux inside pods to support selinux-enabled filesystems                                                                                                      | `true`                                            |
 | `CSIDriver.fsGroupPolicy` | Specifies the fsGroupPolicy for the CSI driver object | `File` |
 | `CSIDriver.seLinuxMount` | Specify for efficient SELinux volume relabeling | `true` |
+| `instanceID`                                   | Unique ID distinguishing this instance of Ceph CSI among other instances, when sharing Ceph clusters across CSI instances for provisioning. | ` ` |
 
 ### Command Line
 
diff --git a/charts/ceph-csi-rbd/templates/nodeplugin-daemonset.yaml b/charts/ceph-csi-rbd/templates/nodeplugin-daemonset.yaml
index 93eef0fc9..cf9b201ce 100644
--- a/charts/ceph-csi-rbd/templates/nodeplugin-daemonset.yaml
+++ b/charts/ceph-csi-rbd/templates/nodeplugin-daemonset.yaml
@@ -60,6 +60,9 @@ spec:
 {{- if .Values.topology.domainLabels }}
             - "--domainlabels={{ .Values.topology.domainLabels | join "," }}"
 {{- end }}
+{{- if .Values.instanceID }}
+            - "--instanceid={{ .Values.instanceID }}"
+{{- end }}
 {{- if .Values.nodeplugin.profiling.enabled }}
             - "--enableprofiling={{ .Values.nodeplugin.profiling.enabled }}"
 {{- end }}
diff --git a/charts/ceph-csi-rbd/templates/provisioner-deployment.yaml b/charts/ceph-csi-rbd/templates/provisioner-deployment.yaml
index 638a8ebe2..adbc8604e 100644
--- a/charts/ceph-csi-rbd/templates/provisioner-deployment.yaml
+++ b/charts/ceph-csi-rbd/templates/provisioner-deployment.yaml
@@ -87,6 +87,9 @@ spec:
             {{- if .Values.provisioner.skipForceFlatten }}
             - "--skipforceflatten={{ .Values.provisioner.skipForceFlatten }}"
             {{- end }}
+            {{- if .Values.instanceID }}
+            - "--instanceid={{ .Values.instanceID }}"
+            {{- end }}
             {{- if .Values.provisioner.profiling.enabled }}
             - "--enableprofiling={{ .Values.provisioner.profiling.enabled }}"
             {{- end }}
diff --git a/charts/ceph-csi-rbd/values.yaml b/charts/ceph-csi-rbd/values.yaml
index b5fe75833..73367eb9b 100644
--- a/charts/ceph-csi-rbd/values.yaml
+++ b/charts/ceph-csi-rbd/values.yaml
@@ -553,3 +553,6 @@ externallyManagedConfigmap: false
 cephConfConfigMapName: ceph-config
 # Name of the configmap used for encryption kms configuration
 kmsConfigMapName: ceph-csi-encryption-kms-config
+# Unique ID distinguishing this instance of Ceph CSI among other instances,
+# when sharing Ceph clusters across CSI instances for provisioning
+# instanceID: default