diff --git a/packages/CodingStyle/src/Rector/Namespace_/ImportFullyQualifiedNamesRector.php b/packages/CodingStyle/src/Rector/Namespace_/ImportFullyQualifiedNamesRector.php
index a9af31e88016..32912c6ae938 100644
--- a/packages/CodingStyle/src/Rector/Namespace_/ImportFullyQualifiedNamesRector.php
+++ b/packages/CodingStyle/src/Rector/Namespace_/ImportFullyQualifiedNamesRector.php
@@ -19,15 +19,24 @@ final class ImportFullyQualifiedNamesRector extends AbstractRector
      */
     private $shouldImportDocBlocks = true;
 
+    /**
+     * @var bool
+     */
+    private $shouldImportRootNamespaceClasses = true;
+
     /**
      * @var NameImporter
      */
     private $nameImporter;
 
-    public function __construct(NameImporter $nameImporter, bool $shouldImportDocBlocks = true)
-    {
+    public function __construct(
+        NameImporter $nameImporter,
+        bool $shouldImportDocBlocks = true,
+        bool $shouldImportRootNamespaceClasses = true
+    ) {
         $this->nameImporter = $nameImporter;
         $this->shouldImportDocBlocks = $shouldImportDocBlocks;
+        $this->shouldImportRootNamespaceClasses = $shouldImportRootNamespaceClasses;
     }
 
     public function getDefinition(): RectorDefinition
@@ -75,12 +84,20 @@ public function refactor(Node $node): ?Node
         $this->useAddingCommander->analyseFileInfoUseStatements($node);
 
         if ($node instanceof Name) {
+            // Importing root namespace classes (like \DateTime) is optional
+            if (! $this->shouldImportRootNamespaceClasses) {
+                $name = $this->getName($node);
+                if ($name !== null && substr_count($name, '\\') === 0) {
+                    return null;
+                }
+            }
+
             return $this->nameImporter->importName($node);
         }
 
         // process doc blocks
         if ($this->shouldImportDocBlocks) {
-            $this->docBlockManipulator->importNames($node);
+            $this->docBlockManipulator->importNames($node, $this->shouldImportRootNamespaceClasses);
             return $node;
         }
 
diff --git a/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/Fixture/import_root_namespace_classes_disabled.php.inc b/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/Fixture/import_root_namespace_classes_disabled.php.inc
new file mode 100644
index 000000000000..658e32bfb4e5
--- /dev/null
+++ b/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/Fixture/import_root_namespace_classes_disabled.php.inc
@@ -0,0 +1,100 @@
+<?php
+
+namespace Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Fixture;
+
+final class ImportRootNamespaceClassesDisabled
+{
+    /**
+     * @var \DateTime
+     */
+    private $date;
+
+    /**
+     * @var \Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Source\Response
+     */
+    private $response;
+
+    public function __construct()
+    {
+        /** @var \DateTime $currentDate */
+        $currentDate = new \DateTime();
+
+        /** @var \Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Source\Response $response */
+        $response = new \Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Source\Response();
+
+        $this->date = $currentDate;
+        $this->response = $response;
+    }
+
+    public function setDate(?\DateTime $date): void
+    {
+        $this->date = $date;
+    }
+
+    public function getDate(): ?\DateTime
+    {
+        return $this->date;
+    }
+
+    public function setResponse(?\Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Source\Response $response): void
+    {
+        $this->response = $response;
+    }
+
+    public function getResponse(): ?\Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Source\Response
+    {
+        return $this->response;
+    }
+}
+?>
+-----
+<?php
+
+namespace Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Fixture;
+
+use Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Source\Response;
+final class ImportRootNamespaceClassesDisabled
+{
+    /**
+     * @var \DateTime
+     */
+    private $date;
+
+    /**
+     * @var Response
+     */
+    private $response;
+
+    public function __construct()
+    {
+        /** @var \DateTime $currentDate */
+        $currentDate = new \DateTime();
+
+        /** @var Response $response */
+        $response = new Response();
+
+        $this->date = $currentDate;
+        $this->response = $response;
+    }
+
+    public function setDate(?\DateTime $date): void
+    {
+        $this->date = $date;
+    }
+
+    public function getDate(): ?\DateTime
+    {
+        return $this->date;
+    }
+
+    public function setResponse(?Response $response): void
+    {
+        $this->response = $response;
+    }
+
+    public function getResponse(): ?Response
+    {
+        return $this->response;
+    }
+}
+?>
diff --git a/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/Fixture/import_root_namespace_classes_enabled.php.inc b/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/Fixture/import_root_namespace_classes_enabled.php.inc
new file mode 100644
index 000000000000..7c1629c8d0b8
--- /dev/null
+++ b/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/Fixture/import_root_namespace_classes_enabled.php.inc
@@ -0,0 +1,62 @@
+<?php
+
+namespace Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Fixture;
+
+final class ImportRootNamespaceClassesEnabled
+{
+    /**
+     * @var \DateTime
+     */
+    private $date;
+
+    public function __construct()
+    {
+        /** @var \DateTime $currentDate */
+        $currentDate = new \DateTime();
+
+        $this->date = $currentDate;
+    }
+
+    public function setDate(?\DateTime $date): void
+    {
+        $this->date = $date;
+    }
+
+    public function getDate(): ?\DateTime
+    {
+        return $this->date;
+    }
+}
+?>
+-----
+<?php
+
+namespace Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector\Fixture;
+
+use DateTime;
+final class ImportRootNamespaceClassesEnabled
+{
+    /**
+     * @var DateTime
+     */
+    private $date;
+
+    public function __construct()
+    {
+        /** @var DateTime $currentDate */
+        $currentDate = new DateTime();
+
+        $this->date = $currentDate;
+    }
+
+    public function setDate(?DateTime $date): void
+    {
+        $this->date = $date;
+    }
+
+    public function getDate(): ?DateTime
+    {
+        return $this->date;
+    }
+}
+?>
diff --git a/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/ImportFullyQualifiedNamesRectorTest.php b/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/ImportFullyQualifiedNamesRectorTest.php
index 9d032e265e3b..9aa5bcd3be53 100644
--- a/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/ImportFullyQualifiedNamesRectorTest.php
+++ b/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/ImportFullyQualifiedNamesRectorTest.php
@@ -58,6 +58,8 @@ public function provideNamespacedClasses(): Iterator
         yield [__DIR__ . '/Fixture/keep_static_method.php.inc'];
         yield [__DIR__ . '/Fixture/keep_various_request.php.inc'];
         yield [__DIR__ . '/Fixture/instance_of.php.inc'];
+
+        yield [__DIR__ . '/Fixture/import_root_namespace_classes_enabled.php.inc'];
     }
 
     public function provideFunctions(): Iterator
diff --git a/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/ImportRootNamespaceClassesDisabledTest.php b/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/ImportRootNamespaceClassesDisabledTest.php
new file mode 100644
index 000000000000..70356e0305dc
--- /dev/null
+++ b/packages/CodingStyle/tests/Rector/Namespace_/ImportFullyQualifiedNamesRector/ImportRootNamespaceClassesDisabledTest.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\CodingStyle\Tests\Rector\Namespace_\ImportFullyQualifiedNamesRector;
+
+use Rector\CodingStyle\Rector\Namespace_\ImportFullyQualifiedNamesRector;
+use Rector\Testing\PHPUnit\AbstractRectorTestCase;
+
+final class ImportRootNamespaceClassesDisabledTest extends AbstractRectorTestCase
+{
+    /**
+     * @dataProvider provideDataForTest()
+     */
+    public function test(string $file): void
+    {
+        $this->doTestFile($file);
+    }
+
+    public function provideDataForTest(): iterable
+    {
+        yield [__DIR__ . '/Fixture/import_root_namespace_classes_disabled.php.inc'];
+    }
+
+    protected function getRectorsWithConfiguration(): array
+    {
+        return [
+            ImportFullyQualifiedNamesRector::class => [
+                '$shouldImportRootNamespaceClasses' => false,
+            ],
+        ];
+    }
+}
diff --git a/packages/NodeTypeResolver/src/PhpDoc/NodeAnalyzer/DocBlockManipulator.php b/packages/NodeTypeResolver/src/PhpDoc/NodeAnalyzer/DocBlockManipulator.php
index c6df8894b14d..73dc30ffa445 100644
--- a/packages/NodeTypeResolver/src/PhpDoc/NodeAnalyzer/DocBlockManipulator.php
+++ b/packages/NodeTypeResolver/src/PhpDoc/NodeAnalyzer/DocBlockManipulator.php
@@ -345,14 +345,18 @@ public function replaceTagByAnother(PhpDocNode $phpDocNode, string $oldTag, stri
         }
     }
 
-    public function importNames(Node $node): void
+    public function importNames(Node $node, bool $shouldImportRootNamespaceClasses = true): void
     {
         if ($node->getDocComment() === null) {
             return;
         }
 
         $phpDocInfo = $this->createPhpDocInfoFromNode($node);
-        $hasNodeChanged = $this->docBlockNameImporter->importNames($phpDocInfo, $node);
+        $hasNodeChanged = $this->docBlockNameImporter->importNames(
+            $phpDocInfo,
+            $node,
+            $shouldImportRootNamespaceClasses
+        );
 
         if ($hasNodeChanged) {
             $this->updateNodeWithPhpDocInfo($node, $phpDocInfo);
diff --git a/packages/NodeTypeResolver/src/PhpDoc/NodeAnalyzer/DocBlockNameImporter.php b/packages/NodeTypeResolver/src/PhpDoc/NodeAnalyzer/DocBlockNameImporter.php
index 926aa2b08f06..dea930b72d59 100644
--- a/packages/NodeTypeResolver/src/PhpDoc/NodeAnalyzer/DocBlockNameImporter.php
+++ b/packages/NodeTypeResolver/src/PhpDoc/NodeAnalyzer/DocBlockNameImporter.php
@@ -77,12 +77,16 @@ public function __construct(
         $this->importSkipper = $importSkipper;
     }
 
-    public function importNames(PhpDocInfo $phpDocInfo, Node $phpParserNode): bool
-    {
+    public function importNames(
+        PhpDocInfo $phpDocInfo,
+        Node $phpParserNode,
+        bool $shouldImportRootNamespaceClasses = true
+    ): bool {
         $phpDocNode = $phpDocInfo->getPhpDocNode();
 
         $this->phpDocNodeTraverser->traverseWithCallable($phpDocNode, function (PhpDocParserNode $docNode) use (
-            $phpParserNode
+            $phpParserNode,
+            $shouldImportRootNamespaceClasses
         ): PhpDocParserNode {
             if (! $docNode instanceof IdentifierTypeNode) {
                 return $docNode;
@@ -93,6 +97,11 @@ public function importNames(PhpDocInfo $phpDocInfo, Node $phpParserNode): bool
                 return $docNode;
             }
 
+            // Importing root namespace classes (like \DateTime) is optional
+            if (! $shouldImportRootNamespaceClasses && substr_count($staticType->getClassName(), '\\') === 0) {
+                return $docNode;
+            }
+
             return $this->processFqnNameImport($phpParserNode, $docNode, $staticType);
         });