diff --git a/config/rector/sets/cakephp60.php b/config/rector/sets/cakephp60.php
index 99e0e38..e194966 100644
--- a/config/rector/sets/cakephp60.php
+++ b/config/rector/sets/cakephp60.php
@@ -3,6 +3,7 @@
 
 use Cake\Upgrade\Rector\Cake6\EventManagerOnRector;
 use Cake\Upgrade\Rector\Cake6\ReplaceCommandArgsIoWithPropertiesRector;
+use Cake\Upgrade\Rector\Cake6\RouteBuilderToCallbackFirstRector;
 use PHPStan\Type\ObjectType;
 use Rector\Config\RectorConfig;
 use Rector\Renaming\Rector\MethodCall\RenameMethodRector;
@@ -23,6 +24,9 @@
 
     $rectorConfig->rule(ReplaceCommandArgsIoWithPropertiesRector::class);
 
+    // RouteBuilder argument reordering
+    $rectorConfig->rule(RouteBuilderToCallbackFirstRector::class);
+
     // Changes related to the accessible => patchable rename
     $rectorConfig->ruleWithConfiguration(RenameMethodRector::class, [
         new MethodCallRename('Cake\ORM\Entity', 'setAccess', 'setPatchable'),
diff --git a/src/Rector/Cake6/RouteBuilderToCallbackFirstRector.php b/src/Rector/Cake6/RouteBuilderToCallbackFirstRector.php
new file mode 100644
index 0000000..71a3340
--- /dev/null
+++ b/src/Rector/Cake6/RouteBuilderToCallbackFirstRector.php
@@ -0,0 +1,174 @@
+<?php
+declare(strict_types=1);
+
+namespace Cake\Upgrade\Rector\Cake6;
+
+use PhpParser\Node;
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\Array_;
+use PhpParser\Node\Expr\Closure;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Name;
+use PHPStan\Type\ObjectType;
+use Rector\Rector\AbstractRector;
+use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
+use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
+
+/**
+ * Reorders RouteBuilder scope/prefix/plugin/resources arguments
+ * to have callback second and params/options third.
+ *
+ * @see \Cake\Upgrade\Test\TestCase\Rector\MethodCall\RouteBuilderToCallbackFirstRector\RouteBuilderToCallbackFirstRectorTest
+ */
+final class RouteBuilderToCallbackFirstRector extends AbstractRector
+{
+    private const METHODS = ['scope', 'prefix', 'plugin', 'resources'];
+
+    public function getRuleDefinition(): RuleDefinition
+    {
+        return new RuleDefinition(
+            'Reorder RouteBuilder scope/prefix/plugin/resources arguments ' .
+            'to have callback second and params/options third',
+            [
+                new CodeSample(
+                    <<<'CODE_SAMPLE'
+$routes->scope('/api', ['prefix' => 'Api'], function ($routes) {
+    $routes->resources('Articles');
+});
+$routes->prefix('admin', [], function ($routes) {
+    $routes->connect('/', ['controller' => 'Dashboard']);
+});
+$routes->resources('Articles', ['only' => 'index']);
+$routes->resources('Posts', ['only' => 'index'], function ($routes) {
+    $routes->resources('Comments');
+});
+CODE_SAMPLE
+                    ,
+                    <<<'CODE_SAMPLE'
+$routes->scope('/api', function ($routes) {
+    $routes->resources('Articles');
+}, ['prefix' => 'Api']);
+$routes->prefix('admin', function ($routes) {
+    $routes->connect('/', ['controller' => 'Dashboard']);
+});
+$routes->resources('Articles', null, ['only' => 'index']);
+$routes->resources('Posts', function ($routes) {
+    $routes->resources('Comments');
+}, ['only' => 'index']);
+CODE_SAMPLE,
+                ),
+            ],
+        );
+    }
+
+    /**
+     * @return array<class-string<\PhpParser\Node>>
+     */
+    public function getNodeTypes(): array
+    {
+        return [MethodCall::class];
+    }
+
+    /**
+     * @param \PhpParser\Node\Expr\MethodCall $node
+     */
+    public function refactor(Node $node): ?Node
+    {
+        // Check if the object is a RouteBuilder
+        if (!$this->isObjectType($node->var, new ObjectType('Cake\Routing\RouteBuilder'))) {
+            return null;
+        }
+
+        // Check if this is one of our target methods
+        if (!$this->isNames($node->name, self::METHODS)) {
+            return null;
+        }
+
+        $methodName = $this->getName($node->name);
+        $argCount = count($node->args);
+
+        // For resources method
+        // Old signature: resources(string $name, array $options = [], ?callable $callback = null)
+        // New signature: resources(string $name, ?Closure $callback = null, array $options = [])
+        if ($methodName === 'resources') {
+            // resources('Articles', ['only' => 'index']) -> resources('Articles', null, ['only' => 'index'])
+            if ($argCount === 2) {
+                $secondArg = $node->args[1];
+                // Check if second arg is an array (options)
+                if ($secondArg->value instanceof Array_) {
+                    // Insert null as second argument, move array to third
+                    $node->args = [
+                        $node->args[0],
+                        new Arg(new ConstFetch(new Name('null'))),
+                        $secondArg,
+                    ];
+
+                    return $node;
+                }
+            }
+
+            // resources('Articles', ['only' => 'index'], fn) -> resources('Articles', fn, ['only' => 'index'])
+            if ($argCount === 3) {
+                $secondArg = $node->args[1];
+                $thirdArg = $node->args[2];
+
+                // Check if third arg is closure and second is array
+                if ($thirdArg->value instanceof Closure && $secondArg->value instanceof Array_) {
+                    // Check if second argument is an empty array - if so, just remove it
+                    $isEmptyArray = count($secondArg->value->items) === 0;
+
+                    if ($isEmptyArray) {
+                        $node->args = [
+                            $node->args[0],
+                            $thirdArg,
+                        ];
+                    } else {
+                        // Swap: callback becomes second, options becomes third
+                        $node->args[1] = $thirdArg;
+                        $node->args[2] = $secondArg;
+                    }
+
+                    return $node;
+                }
+            }
+
+            return null;
+        }
+
+        // For scope/prefix/plugin methods
+        // Old signature: method(string $path, array|callable $params, ?callable $callback = null)
+        // New signature: method(string $path, Closure $callback, array $params = [])
+
+        // Only process if there are exactly 3 arguments
+        if ($argCount !== 3) {
+            return null;
+        }
+
+        $secondArg = $node->args[1];
+        $thirdArg = $node->args[2];
+
+        // Check if the third argument is a closure/callable
+        // and second argument is array (the old signature)
+        if ($thirdArg->value instanceof Closure) {
+            // Check if second argument is an empty array - if so, just remove it
+            $isEmptyArray = $secondArg->value instanceof Array_ && count($secondArg->value->items) === 0;
+
+            if ($isEmptyArray) {
+                // Just use callback as second arg, drop the empty array
+                $node->args = [
+                    $node->args[0],
+                    $thirdArg,
+                ];
+            } else {
+                // Swap: callback becomes second, params becomes third
+                $node->args[1] = $thirdArg;
+                $node->args[2] = $secondArg;
+            }
+
+            return $node;
+        }
+
+        return null;
+    }
+}
diff --git a/tests/TestCase/Rector/MethodCall/RouteBuilderToCallbackFirstRector/Fixture/fixture.php.inc b/tests/TestCase/Rector/MethodCall/RouteBuilderToCallbackFirstRector/Fixture/fixture.php.inc
new file mode 100644
index 0000000..8282fa7
--- /dev/null
+++ b/tests/TestCase/Rector/MethodCall/RouteBuilderToCallbackFirstRector/Fixture/fixture.php.inc
@@ -0,0 +1,113 @@
+<?php
+
+namespace Cake\Upgrade\Test\TestCase\Rector\MethodCall\RouteBuilderToCallbackFirstRector\Fixture;
+
+use Cake\Routing\RouteBuilder;
+
+class Fixture
+{
+    public function run(RouteBuilder $routes)
+    {
+        // Should be transformed - scope with params and callback (3 args)
+        $routes->scope('/api', ['prefix' => 'Api'], function ($routes) {
+            $routes->resources('Articles');
+        });
+
+        // Should be transformed - prefix with empty array and callback
+        $routes->prefix('admin', [], function ($routes) {
+            $routes->connect('/', ['controller' => 'Dashboard']);
+        });
+
+        // Should be transformed - plugin with params
+        $routes->plugin('Blog', ['path' => '/blog'], function ($routes) {
+            $routes->resources('Posts');
+        });
+
+        // Should be transformed - resources with only options (no callback)
+        $routes->resources('Articles', ['only' => 'index']);
+
+        // Should be transformed - resources with options and callback (3 args)
+        $routes->resources('Posts', ['only' => ['index', 'view']], function ($routes) {
+            $routes->resources('Comments');
+        });
+
+        // Should be transformed - resources with empty options and callback
+        $routes->resources('Tags', [], function ($routes) {
+            $routes->connect('/popular', ['action' => 'popular']);
+        });
+
+        // Should NOT be transformed - scope with only callback (2 args, new style)
+        $routes->scope('/v2', function ($routes) {
+            $routes->resources('Users');
+        });
+
+        // Should NOT be transformed - prefix with only callback
+        $routes->prefix('api', function ($routes) {
+            $routes->connect('/', []);
+        });
+
+        // Should NOT be transformed - resources with callback (3 args, but callback is second)
+        $routes->resources('Comments', function ($routes) {
+            $routes->resources('Replies');
+        });
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Cake\Upgrade\Test\TestCase\Rector\MethodCall\RouteBuilderToCallbackFirstRector\Fixture;
+
+use Cake\Routing\RouteBuilder;
+
+class Fixture
+{
+    public function run(RouteBuilder $routes)
+    {
+        // Should be transformed - scope with params and callback (3 args)
+        $routes->scope('/api', function ($routes) {
+            $routes->resources('Articles');
+        }, ['prefix' => 'Api']);
+
+        // Should be transformed - prefix with empty array and callback
+        $routes->prefix('admin', function ($routes) {
+            $routes->connect('/', ['controller' => 'Dashboard']);
+        });
+
+        // Should be transformed - plugin with params
+        $routes->plugin('Blog', function ($routes) {
+            $routes->resources('Posts');
+        }, ['path' => '/blog']);
+
+        // Should be transformed - resources with only options (no callback)
+        $routes->resources('Articles', null, ['only' => 'index']);
+
+        // Should be transformed - resources with options and callback (3 args)
+        $routes->resources('Posts', function ($routes) {
+            $routes->resources('Comments');
+        }, ['only' => ['index', 'view']]);
+
+        // Should be transformed - resources with empty options and callback
+        $routes->resources('Tags', function ($routes) {
+            $routes->connect('/popular', ['action' => 'popular']);
+        });
+
+        // Should NOT be transformed - scope with only callback (2 args, new style)
+        $routes->scope('/v2', function ($routes) {
+            $routes->resources('Users');
+        });
+
+        // Should NOT be transformed - prefix with only callback
+        $routes->prefix('api', function ($routes) {
+            $routes->connect('/', []);
+        });
+
+        // Should NOT be transformed - resources with callback (3 args, but callback is second)
+        $routes->resources('Comments', function ($routes) {
+            $routes->resources('Replies');
+        });
+    }
+}
+
+?>
diff --git a/tests/TestCase/Rector/MethodCall/RouteBuilderToCallbackFirstRector/RouteBuilderToCallbackFirstRectorTest.php b/tests/TestCase/Rector/MethodCall/RouteBuilderToCallbackFirstRector/RouteBuilderToCallbackFirstRectorTest.php
new file mode 100644
index 0000000..dbe33e1
--- /dev/null
+++ b/tests/TestCase/Rector/MethodCall/RouteBuilderToCallbackFirstRector/RouteBuilderToCallbackFirstRectorTest.php
@@ -0,0 +1,28 @@
+<?php
+declare(strict_types=1);
+
+namespace Cake\Upgrade\Test\TestCase\Rector\MethodCall\RouteBuilderToCallbackFirstRector;
+
+use Iterator;
+use Rector\Testing\PHPUnit\AbstractRectorTestCase;
+
+final class RouteBuilderToCallbackFirstRectorTest extends AbstractRectorTestCase
+{
+    /**
+     * @dataProvider provideData()
+     */
+    public function test(string $filePath): void
+    {
+        $this->doTestFile($filePath);
+    }
+
+    public static function provideData(): Iterator
+    {
+        return self::yieldFilesFromDirectory(__DIR__ . '/Fixture');
+    }
+
+    public function provideConfigFilePath(): string
+    {
+        return __DIR__ . '/config/configured_rule.php';
+    }
+}
diff --git a/tests/TestCase/Rector/MethodCall/RouteBuilderToCallbackFirstRector/config/configured_rule.php b/tests/TestCase/Rector/MethodCall/RouteBuilderToCallbackFirstRector/config/configured_rule.php
new file mode 100644
index 0000000..f4b1569
--- /dev/null
+++ b/tests/TestCase/Rector/MethodCall/RouteBuilderToCallbackFirstRector/config/configured_rule.php
@@ -0,0 +1,9 @@
+<?php
+declare(strict_types=1);
+
+use Cake\Upgrade\Rector\Cake6\RouteBuilderToCallbackFirstRector;
+use Rector\Config\RectorConfig;
+
+return static function (RectorConfig $rectorConfig): void {
+    $rectorConfig->rule(RouteBuilderToCallbackFirstRector::class);
+};