diff --git a/charts/immich/templates/immich-config.yml b/charts/immich/templates/immich-config.yml
index 50eb981a..00bf4831 100644
--- a/charts/immich/templates/immich-config.yml
+++ b/charts/immich/templates/immich-config.yml
@@ -1,4 +1,7 @@
-{{- if .Values.immich.configuration }}
+{{- if and .Values.immich.configuration .Values.immich.existingConfiguration }}
+{{- fail "immich.configuration and immich.existingConfiguration are mutually exclusive." }}
+{{- end }}
+{{- if and .Values.immich.configuration (not .Values.immich.existingConfiguration) }}
 apiVersion: v1
 kind: {{ .Values.immich.configurationKind }}
 metadata:
diff --git a/charts/immich/templates/server.yaml b/charts/immich/templates/server.yaml
index b50c9737..be7427c1 100644
--- a/charts/immich/templates/server.yaml
+++ b/charts/immich/templates/server.yaml
@@ -18,7 +18,7 @@ controllers:
           {{ if .Values.immich.metrics.enabled }}
           IMMICH_TELEMETRY_INCLUDE: all
           {{ end }}
-          {{- if .Values.immich.configuration }}
+          {{- if or .Values.immich.configuration .Values.immich.existingConfiguration }}
           IMMICH_CONFIG_FILE: /config/immich-config.yaml
           {{- end }}
         ports:
@@ -93,7 +93,7 @@ serviceMonitor:
         scheme: http
 
 persistence:
-{{- if .Values.immich.configuration }}
+{{- if or .Values.immich.configuration .Values.immich.existingConfiguration }}
   config:
     enabled: true
     {{- if eq .Values.immich.configurationKind "Secret" }}
@@ -101,7 +101,11 @@ persistence:
     {{- else }}
     type: configMap
     {{- end }}
+    {{- if .Values.immich.existingConfiguration }}
+    name: {{ .Values.immich.existingConfiguration }}
+    {{- else }}
     name: {{ .Release.Name }}-immich-config
+    {{- end }}
 {{- end }}
   data:
     enabled: true
diff --git a/charts/immich/values.yaml b/charts/immich/values.yaml
index f4b3801d..883e8ec8 100644
--- a/charts/immich/values.yaml
+++ b/charts/immich/values.yaml
@@ -25,7 +25,7 @@ immich:
       # Automatically creating the library volume is not supported by this chart
       # You have to specify an existing PVC to use
       existingClaim:
-  # configuration is immich-config.json converted to yaml
+  # configuration is immich-config.json converted to yaml. Ignored if existingConfiguration is set.
   # ref: https://immich.app/docs/install/config-file/
   #
   configuration: {}
@@ -38,6 +38,9 @@ immich:
   # Sets the resource Kind to store configuration in. Must be either ConfigMap or Secret.
   configurationKind: ConfigMap
 
+  # Specify existing configuration resource name here to skip creation of a new one
+  # existingConfiguration:
+
 # Dependencies
 
 valkey: