diff --git a/src/Export/Base/AbstractSpreadsheetRenderer.php b/src/Export/Base/AbstractSpreadsheetRenderer.php
index 12f69234..d0726ee6 100644
--- a/src/Export/Base/AbstractSpreadsheetRenderer.php
+++ b/src/Export/Base/AbstractSpreadsheetRenderer.php
@@ -16,6 +16,7 @@ use App\Event\MetaDisplayEventInterface;
 use App\Event\ProjectMetaDisplayEvent;
 use App\Event\TimesheetMetaDisplayEvent;
 use App\Event\UserPreferenceDisplayEvent;
+use App\Export\ExportFilename;
 use App\Export\ExportItemInterface;
 use App\Repository\Query\CustomerQuery;
 use App\Repository\Query\TimesheetQuery;
@@ -753,9 +754,10 @@ abstract class AbstractSpreadsheetRenderer
     public function render(array $exportItems, TimesheetQuery $query): Response
     {
         $spreadsheet = $this->fromArrayToSpreadsheet($exportItems, $query);
-        $filename = $this->saveSpreadsheet($spreadsheet);
+        $file = $this->saveSpreadsheet($spreadsheet);
+        $filename = new ExportFilename($query);
 
-        return $this->getFileResponse($filename, 'kimai-export' . $this->getFileExtension());
+        return $this->getFileResponse($file, $filename->getFilename() . $this->getFileExtension());
     }
 
     /**
diff --git a/src/Export/Base/PDFRenderer.php b/src/Export/Base/PDFRenderer.php
index 4fe421a1..7f3680f3 100644
--- a/src/Export/Base/PDFRenderer.php
+++ b/src/Export/Base/PDFRenderer.php
@@ -10,6 +10,7 @@
 namespace App\Export\Base;
 
 use App\Export\ExportContext;
+use App\Export\ExportFilename;
 use App\Export\ExportItemInterface;
 use App\Project\ProjectStatisticService;
 use App\Repository\Query\TimesheetQuery;
@@ -94,8 +95,9 @@ class PDFRenderer
      */
     public function render(array $timesheets, TimesheetQuery $query): Response
     {
+        $filename = new ExportFilename($query);
         $context = new ExportContext();
-        $context->setOption('filename', 'kimai-export');
+        $context->setOption('filename', $filename->getFilename());
 
         $summary = $this->calculateSummary($timesheets);
         $content = $this->twig->render($this->getTemplate(), array_merge([
@@ -117,7 +119,8 @@ class PDFRenderer
 
         $filename = $context->getOption('filename');
         if (empty($filename)) {
-            $filename = 'kimai-export';
+            $filename = new ExportFilename($query);
+            $filename = $filename->getFilename();
         }
 
         $filename = FileHelper::convertToAsciiFilename($filename);
diff --git a/src/Export/ExportFilename.php b/src/Export/ExportFilename.php
new file mode 100644
index 00000000..da9c5a6d
--- /dev/null
+++ b/src/Export/ExportFilename.php
@@ -0,0 +1,82 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Export;
+
+use App\Entity\Customer;
+use App\Repository\Query\TimesheetQuery;
+use App\Utils\FileHelper;
+
+final class ExportFilename
+{
+    /**
+     * @var string
+     */
+    private $filename;
+
+    public function __construct(TimesheetQuery $query)
+    {
+        $filename = date('Ymd');
+        $hasName = false;
+
+        $customers = $query->getCustomers();
+        if (\count($customers) === 1) {
+            $filename .= '-' . $this->convert($this->getCustomerName($customers[0]));
+            $hasName = true;
+        }
+
+        $projects = $query->getProjects();
+        if (\count($projects) === 1) {
+            if (!$hasName) {
+                $filename .= '-' . $this->convert($this->getCustomerName($projects[0]->getCustomer()));
+            }
+            $filename .= '-' . $this->convert($projects[0]->getName());
+            $hasName = true;
+        }
+
+        $users = $query->getUsers();
+        if (\count($users) === 1) {
+            $filename .= '-' . $this->convert($users[0]->getDisplayName());
+            $hasName = true;
+        }
+
+        if (!$hasName) {
+            $filename .= '-kimai-export';
+        }
+
+        $filename = str_replace(['/', '\\'], '-', $filename);
+
+        $this->filename = $filename;
+    }
+
+    private function getCustomerName(Customer $customer): string
+    {
+        $company = $customer->getCompany();
+        if (empty($company)) {
+            $company = $customer->getName();
+        }
+
+        return $company;
+    }
+
+    private function convert(string $filename): string
+    {
+        return FileHelper::convertToAsciiFilename($filename);
+    }
+
+    public function getFilename()
+    {
+        return $this->filename;
+    }
+
+    public function __toString()
+    {
+        return $this->getFilename();
+    }
+}
diff --git a/tests/Export/ExportFilenameTest.php b/tests/Export/ExportFilenameTest.php
new file mode 100644
index 00000000..32c730ad
--- /dev/null
+++ b/tests/Export/ExportFilenameTest.php
@@ -0,0 +1,96 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Export;
+
+use App\Entity\Customer;
+use App\Entity\Project;
+use App\Entity\User;
+use App\Export\ExportFilename;
+use App\Repository\Query\TimesheetQuery;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Export\ExportFilename
+ */
+class ExportFilenameTest extends TestCase
+{
+    public function testExportFilename()
+    {
+        $datePrefix = date('Ymd');
+
+        $query = new TimesheetQuery();
+
+        $sut = new ExportFilename($query);
+
+        self::assertEquals($datePrefix . '-kimai-export', $sut->getFilename());
+        self::assertEquals($datePrefix . '-kimai-export', (string) $sut);
+
+        $customer = new Customer();
+        $customer->setName('foo');
+        $query = new TimesheetQuery();
+        $query->addCustomer($customer);
+        $sut = new ExportFilename($query);
+
+        self::assertEquals($datePrefix . '-foo', $sut->getFilename());
+        self::assertEquals($datePrefix . '-foo', (string) $sut);
+
+        $customer->setCompany('barß / laölala #   ldksjf 123 MyAwesome GmbH');
+        $sut = new ExportFilename($query);
+
+        self::assertEquals($datePrefix . '-barss_laolala_ldksjf_123_MyAwesome_GmbH', $sut->getFilename());
+        self::assertEquals($datePrefix . '-barss_laolala_ldksjf_123_MyAwesome_GmbH', (string) $sut);
+
+        $customer->setCompany('까깨꺄꺠꺼께껴꼐꼬꽈sssss');
+        $sut = new ExportFilename($query);
+        self::assertEquals($datePrefix . '-kkakkaekkyakkyaekkeokkekkyeokkyekkokkwasssss', $sut->getFilename());
+
+        $customer->setCompany('\"#+ß.!$%&/()=?\\n=/*-+´_<>@' . "\n");
+        $sut = new ExportFilename($query);
+        self::assertEquals($datePrefix . '-ss_n_-', $sut->getFilename());
+
+        $project = new Project();
+        $project->setName('Demo ProjecT1');
+        $customer->setCompany('\"#+ß.!$%&/()=?\\n=/*-+´_<>@' . "\n");
+        $query->addProject($project);
+
+        $sut = new ExportFilename($query);
+        self::assertEquals($datePrefix . '-ss_n_--Demo_ProjecT1', $sut->getFilename());
+
+        $user = new User();
+        $user->setUsername('thorsten');
+        $query->addUser($user);
+
+        $sut = new ExportFilename($query);
+        self::assertEquals($datePrefix . '-ss_n_--Demo_ProjecT1-thorsten', $sut->getFilename());
+        $user->setAlias('Martin Müller-Lüdenscheidt');
+
+        $sut = new ExportFilename($query);
+        self::assertEquals($datePrefix . '-ss_n_--Demo_ProjecT1-Martin_Muller-Ludenscheidt', $sut->getFilename());
+
+        $user = $this->createMock(User::class);
+        $user->method('getId')->willReturn(1);
+        $query->addUser($user);
+        $sut = new ExportFilename($query);
+        self::assertEquals($datePrefix . '-ss_n_--Demo_ProjecT1', $sut->getFilename());
+
+        $project = new Project();
+        $project->setName('Project2');
+        $query->addProject($project);
+        $sut = new ExportFilename($query);
+        self::assertEquals($datePrefix . '-ss_n_-', $sut->getFilename());
+
+        $customer = new Customer();
+        $customer->setName('Customer AAAA');
+        $query->addCustomer($customer);
+
+        $sut = new ExportFilename($query);
+        self::assertEquals($datePrefix . '-kimai-export', $sut->getFilename());
+    }
+}
diff --git a/tests/Export/Renderer/CsvRendererTest.php b/tests/Export/Renderer/CsvRendererTest.php
index 9991df6a..4a902da3 100644
--- a/tests/Export/Renderer/CsvRendererTest.php
+++ b/tests/Export/Renderer/CsvRendererTest.php
@@ -49,8 +49,9 @@ class CsvRendererTest extends AbstractRendererTest
         $response = $this->render($sut);
 
         $file = $response->getFile();
+        $prefix = date('Ymd');
         $this->assertEquals('text/csv', $response->headers->get('Content-Type'));
-        $this->assertEquals('attachment; filename=kimai-export.csv', $response->headers->get('Content-Disposition'));
+        $this->assertEquals('attachment; filename=' . $prefix . '-Customer_Name-project_name.csv', $response->headers->get('Content-Disposition'));
 
         $this->assertTrue(file_exists($file->getRealPath()));
         $content = file_get_contents($file->getRealPath());
diff --git a/tests/Export/Renderer/PdfRendererTest.php b/tests/Export/Renderer/PdfRendererTest.php
index b4099794..d1a9b0f3 100644
--- a/tests/Export/Renderer/PdfRendererTest.php
+++ b/tests/Export/Renderer/PdfRendererTest.php
@@ -58,8 +58,9 @@ class PdfRendererTest extends AbstractRendererTest
 
         $response = $this->render($sut);
 
+        $prefix = date('Ymd');
         $this->assertEquals('application/pdf', $response->headers->get('Content-Type'));
-        $this->assertEquals('attachment; filename=kimai-export.pdf', $response->headers->get('Content-Disposition'));
+        $this->assertEquals('attachment; filename=' . $prefix . '-Customer_Name-project_name.pdf', $response->headers->get('Content-Disposition'));
 
         $this->assertNotEmpty($response->getContent());
     }
diff --git a/tests/Export/Renderer/XlsxRendererTest.php b/tests/Export/Renderer/XlsxRendererTest.php
index 956ff55c..e76b0a70 100644
--- a/tests/Export/Renderer/XlsxRendererTest.php
+++ b/tests/Export/Renderer/XlsxRendererTest.php
@@ -39,8 +39,9 @@ class XlsxRendererTest extends AbstractRendererTest
         $response = $this->render($sut);
 
         $file = $response->getFile();
+        $prefix = date('Ymd');
         $this->assertEquals('application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', $response->headers->get('Content-Type'));
-        $this->assertEquals('attachment; filename=kimai-export.xlsx', $response->headers->get('Content-Disposition'));
+        $this->assertEquals('attachment; filename=' . $prefix . '-Customer_Name-project_name.xlsx', $response->headers->get('Content-Disposition'));
 
         $this->assertTrue(file_exists($file->getRealPath()));
 
diff --git a/tests/Export/Timesheet/CsvRendererTest.php b/tests/Export/Timesheet/CsvRendererTest.php
index 832d9c42..af70a2a6 100644
--- a/tests/Export/Timesheet/CsvRendererTest.php
+++ b/tests/Export/Timesheet/CsvRendererTest.php
@@ -46,8 +46,9 @@ class CsvRendererTest extends AbstractRendererTest
         $response = $this->render($sut);
 
         $file = $response->getFile();
+        $prefix = date('Ymd');
         $this->assertEquals('text/csv', $response->headers->get('Content-Type'));
-        $this->assertEquals('attachment; filename=kimai-export.csv', $response->headers->get('Content-Disposition'));
+        $this->assertEquals('attachment; filename=' . $prefix . '-Customer_Name-project_name.csv', $response->headers->get('Content-Disposition'));
 
         $this->assertTrue(file_exists($file->getRealPath()));
         $content = file_get_contents($file->getRealPath());
diff --git a/tests/Export/Timesheet/PdfRendererTest.php b/tests/Export/Timesheet/PdfRendererTest.php
index 9c2b7f64..b4d1b880 100644
--- a/tests/Export/Timesheet/PdfRendererTest.php
+++ b/tests/Export/Timesheet/PdfRendererTest.php
@@ -51,8 +51,9 @@ class PdfRendererTest extends AbstractRendererTest
 
         $response = $this->render($sut);
 
+        $prefix = date('Ymd');
         $this->assertEquals('application/pdf', $response->headers->get('Content-Type'));
-        $this->assertEquals('attachment; filename=kimai-export.pdf', $response->headers->get('Content-Disposition'));
+        $this->assertEquals('attachment; filename=' . $prefix . '-Customer_Name-project_name.pdf', $response->headers->get('Content-Disposition'));
 
         $this->assertNotEmpty($response->getContent());
     }
diff --git a/tests/Export/Timesheet/XlsxRendererTest.php b/tests/Export/Timesheet/XlsxRendererTest.php
index 2bfc2994..16457924 100644
--- a/tests/Export/Timesheet/XlsxRendererTest.php
+++ b/tests/Export/Timesheet/XlsxRendererTest.php
@@ -36,8 +36,9 @@ class XlsxRendererTest extends AbstractRendererTest
         $response = $this->render($sut);
 
         $file = $response->getFile();
+        $prefix = date('Ymd');
         $this->assertEquals('application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', $response->headers->get('Content-Type'));
-        $this->assertEquals('attachment; filename=kimai-export.xlsx', $response->headers->get('Content-Disposition'));
+        $this->assertEquals('attachment; filename=' . $prefix . '-Customer_Name-project_name.xlsx', $response->headers->get('Content-Disposition'));
 
         $this->assertTrue(file_exists($file->getRealPath()));