diff --git a/docs/CustomizingAzdParameters.md b/docs/CustomizingAzdParameters.md
index ee72294..2585336 100644
--- a/docs/CustomizingAzdParameters.md
+++ b/docs/CustomizingAzdParameters.md
@@ -23,3 +23,7 @@ Change the Model Capacity (choose a number based on available GPT model capacity
 azd env set AZURE_ENV_MODEL_CAPACITY 30
 ```
 
+Set the Log Analytics Workspace Id if you need to reuse the existing workspace which is already existing
+```shell
+azd env set AZURE_ENV_LOG_ANALYTICS_WORKSPACE_ID '<Existing Log Analytics Workspace Id>'
+```
diff --git a/docs/DeploymentGuide.md b/docs/DeploymentGuide.md
index 3c61018..c0f6f1b 100644
--- a/docs/DeploymentGuide.md
+++ b/docs/DeploymentGuide.md
@@ -29,6 +29,7 @@ When you start the deployment, most parameters will have **default values**, but
 | **Resource Prefix** | Prefix for all resources created by this template. This prefix will be used to create unique names for all resources. The prefix must be unique within the resource group. | None |
 | **AI Location** | Location for all AI services resources. This location can be different from the resource group location | None |
 | **Capacity** | Configure capacity for **gpt-4o**. |  5k |
+| **Existing Log analytics workspace** | To reuse the existing Log analytics workspace Id. |  |
 
 This accelerator can be configured to  use authentication. 
 
diff --git a/infra/deploy_ai_foundry.bicep b/infra/deploy_ai_foundry.bicep
index 11f49e5..72adabe 100644
--- a/infra/deploy_ai_foundry.bicep
+++ b/infra/deploy_ai_foundry.bicep
@@ -11,6 +11,13 @@ param managedIdentityObjectId string
 param aiServicesEndpoint string
 param aiServicesKey string
 param aiServicesId string
+
+param existingLogAnalyticsWorkspaceId string = ''
+
+var useExisting = !empty(existingLogAnalyticsWorkspaceId)
+var existingLawResourceGroup = useExisting ? split(existingLogAnalyticsWorkspaceId, '/')[4] : ''
+var existingLawName = useExisting ? split(existingLogAnalyticsWorkspaceId, '/')[8] : ''
+
 var abbrs = loadJsonContent('./abbreviations.json')
 
 var storageName = '${abbrs.storage.storageAccount}${solutionName}'
@@ -32,7 +39,12 @@ resource keyVault 'Microsoft.KeyVault/vaults@2022-07-01' existing = {
   name: keyVaultName
 }
 
-resource logAnalytics 'Microsoft.OperationalInsights/workspaces@2023-09-01' = {
+resource existingLogAnalyticsWorkspace 'Microsoft.OperationalInsights/workspaces@2020-08-01' existing = if (useExisting) {
+  name: existingLawName
+  scope: resourceGroup(existingLawResourceGroup)
+}
+
+resource logAnalytics 'Microsoft.OperationalInsights/workspaces@2023-09-01' = if (!useExisting) {
   name: workspaceName
   location: location
   tags: {}
@@ -303,7 +315,7 @@ output aiProjectName string = aiHubProject.name
 
 output storageAccountName string = storageNameCleaned
 
-output logAnalyticsId string = logAnalytics.id
+output logAnalyticsId string = useExisting ? existingLogAnalyticsWorkspace.id : logAnalytics.id
 output storageAccountId string = storage.id
 
 output projectConnectionString string = '${split(aiHubProject.properties.discoveryUrl, '/')[2]};${subscription().subscriptionId};${resourceGroup().name};${aiHubProject.name}'
diff --git a/infra/main.bicep b/infra/main.bicep
index 51977ce..40b02d9 100644
--- a/infra/main.bicep
+++ b/infra/main.bicep
@@ -33,6 +33,8 @@ var safePrefix = length(Prefix) > 20 ? substring(Prefix, 0, 20) : Prefix
 param AzureAiServiceLocation string  // The location used for all deployed resources.  This location must be in the same region as the resource group.
 param capacity int = 5
 
+param existingLogAnalyticsWorkspaceId string = ''
+
 var uniqueId = toLower(uniqueString(subscription().id, safePrefix, resourceGroup().location))
 var UniquePrefix = 'cm${padLeft(take(uniqueId, 12), 12, '0')}'
 var ResourcePrefix = take('cm${safePrefix}${UniquePrefix}', 15)
@@ -136,6 +138,7 @@ module azureAifoundry 'deploy_ai_foundry.bicep' = {
     aiServicesEndpoint: azureAiServices.properties.endpoint
     aiServicesKey: azureAiServices.listKeys().key1
     aiServicesId: azureAiServices.id
+    existingLogAnalyticsWorkspaceId: existingLogAnalyticsWorkspaceId
   }
   scope: resourceGroup(resourceGroup().name)
 }
diff --git a/infra/main.bicepparam b/infra/main.bicepparam
index a369041..4ca1065 100644
--- a/infra/main.bicepparam
+++ b/infra/main.bicepparam
@@ -2,3 +2,4 @@ using './main.bicep'
 
 param AzureAiServiceLocation = readEnvironmentVariable('AZURE_LOCATION','japaneast')
 param Prefix = readEnvironmentVariable('AZURE_ENV_NAME','azdtemp')
+param existingLogAnalyticsWorkspaceId = readEnvironmentVariable('AZURE_ENV_LOG_ANALYTICS_WORKSPACE_ID', '')