diff --git a/app/code/Magento/CmsGraphQl/Model/Resolver/DataProvider/Block.php b/app/code/Magento/CmsGraphQl/Model/Resolver/DataProvider/Block.php
index 47a2439c4fad0..fa4944381b858 100644
--- a/app/code/Magento/CmsGraphQl/Model/Resolver/DataProvider/Block.php
+++ b/app/code/Magento/CmsGraphQl/Model/Resolver/DataProvider/Block.php
@@ -59,6 +59,7 @@ public function getData(string $blockIdentifier): array
         $renderedContent = $this->widgetFilter->filter($block->getContent());
 
         $blockData = [
+            BlockInterface::BLOCK_ID => $block->getId(),
             BlockInterface::IDENTIFIER => $block->getIdentifier(),
             BlockInterface::TITLE => $block->getTitle(),
             BlockInterface::CONTENT => $renderedContent,
diff --git a/app/code/Magento/CmsGraphQl/etc/schema.graphqls b/app/code/Magento/CmsGraphQl/etc/schema.graphqls
index 765e58849fc96..5504c42b339f9 100644
--- a/app/code/Magento/CmsGraphQl/etc/schema.graphqls
+++ b/app/code/Magento/CmsGraphQl/etc/schema.graphqls
@@ -37,6 +37,7 @@ type CmsBlocks @doc(description: "CMS blocks information") {
 }
 
 type CmsBlock @doc(description: "CMS block defines all CMS block information") {
+    block_id: Int @doc(description: "Entity ID of CMS block")
     identifier: String @doc(description: "CMS block identifier")
     title: String @doc(description: "CMS block title")
     content: String @doc(description: "CMS block content")
diff --git a/dev/tests/api-functional/testsuite/Magento/GraphQl/Cms/CmsBlockTest.php b/dev/tests/api-functional/testsuite/Magento/GraphQl/Cms/CmsBlockTest.php
index 57f526b1cb2f7..6e07f8cd7876a 100644
--- a/dev/tests/api-functional/testsuite/Magento/GraphQl/Cms/CmsBlockTest.php
+++ b/dev/tests/api-functional/testsuite/Magento/GraphQl/Cms/CmsBlockTest.php
@@ -47,6 +47,7 @@ public function testGetCmsBlock()
 {
   cmsBlocks(identifiers: "enabled_block") {
     items {
+      block_id
       identifier
       title
       content
@@ -59,6 +60,43 @@ public function testGetCmsBlock()
         self::assertArrayHasKey('cmsBlocks', $response);
         self::assertArrayHasKey('items', $response['cmsBlocks']);
 
+        self::assertEquals($cmsBlockData['block_id'], $response['cmsBlocks']['items'][0]['block_id']);
+        self::assertEquals($cmsBlockData['identifier'], $response['cmsBlocks']['items'][0]['identifier']);
+        self::assertEquals($cmsBlockData['title'], $response['cmsBlocks']['items'][0]['title']);
+        self::assertEquals($renderedContent, $response['cmsBlocks']['items'][0]['content']);
+    }
+
+    /**
+     * Verify the fields of CMS Block selected by block_id
+     *
+     * @magentoApiDataFixture Magento/Cms/_files/blocks.php
+     */
+    public function testGetCmsBlockByBlockId()
+    {
+        $cmsBlock = $this->blockRepository->getById('enabled_block');
+        $cmsBlockData = $cmsBlock->getData();
+        $blockId = $cmsBlockData['block_id'];
+        $renderedContent = $this->filterEmulate->setUseSessionInUrl(false)->filter($cmsBlock->getContent());
+
+        $query =
+            <<<QUERY
+{
+  cmsBlocks(identifiers: "$blockId") {
+    items {
+      block_id
+      identifier
+      title
+      content
+    }
+  }
+}
+QUERY;
+        $response = $this->graphQlQuery($query);
+
+        self::assertArrayHasKey('cmsBlocks', $response);
+        self::assertArrayHasKey('items', $response['cmsBlocks']);
+
+        self::assertEquals($blockId, $response['cmsBlocks']['items'][0]['block_id']);
         self::assertEquals($cmsBlockData['identifier'], $response['cmsBlocks']['items'][0]['identifier']);
         self::assertEquals($cmsBlockData['title'], $response['cmsBlocks']['items'][0]['title']);
         self::assertEquals($renderedContent, $response['cmsBlocks']['items'][0]['content']);