diff --git a/reportbuilder/classes/external/custom_report_exporter.php b/reportbuilder/classes/external/custom_report_exporter.php
index 00de414418c..9fb6f60e8ad 100644
--- a/reportbuilder/classes/external/custom_report_exporter.php
+++ b/reportbuilder/classes/external/custom_report_exporter.php
@@ -93,6 +93,13 @@ class custom_report_exporter extends persistent_exporter {
             'filtersapplied' => ['type' => PARAM_INT],
             'filterspresent' => ['type' => PARAM_BOOL],
             'filtersform' => ['type' => PARAM_RAW],
+            'attributes' => [
+                'type' => [
+                    'name' => ['type' => PARAM_TEXT],
+                    'value' => ['type' => PARAM_TEXT]
+                ],
+                'multiple' => true,
+            ],
             'editmode' => ['type' => PARAM_BOOL],
             'sidebarmenucards' => [
                 'type' => custom_report_column_cards_exporter::read_properties_definition(),
@@ -130,6 +137,7 @@ class custom_report_exporter extends persistent_exporter {
 
         $filterspresent = false;
         $filtersform = '';
+        $attributes = [];
 
         if ($this->editmode) {
             $table = custom_report_table::create($this->persistent->get('id'));
@@ -147,6 +155,10 @@ class custom_report_exporter extends persistent_exporter {
             if ($filterspresent) {
                 $filtersform = $this->generate_filters_form()->render();
             }
+            // Get the report attributes.
+            $attributes = array_map(static function($key, $value): array {
+                return ['name' => $key, 'value' => $value];
+            }, array_keys($report->get_attributes()), $report->get_attributes());
         }
 
         // If we are editing we need all this information for the template.
@@ -173,6 +185,7 @@ class custom_report_exporter extends persistent_exporter {
             'filtersapplied' => $report->get_applied_filter_count(),
             'filterspresent' => $filterspresent,
             'filtersform' => $filtersform,
+            'attributes' => $attributes,
             'editmode' => $this->editmode,
             'javascript' => '',
         ] + $editordata;
diff --git a/reportbuilder/classes/external/system_report_exporter.php b/reportbuilder/classes/external/system_report_exporter.php
index bc7fd29ed60..cabfa2a5457 100644
--- a/reportbuilder/classes/external/system_report_exporter.php
+++ b/reportbuilder/classes/external/system_report_exporter.php
@@ -70,6 +70,13 @@ class system_report_exporter extends persistent_exporter {
             'filterspresent' => ['type' => PARAM_BOOL],
             'filtersapplied' => ['type' => PARAM_INT],
             'filtersform' => ['type' => PARAM_RAW],
+            'attributes' => [
+                'type' => [
+                    'name' => ['type' => PARAM_TEXT],
+                    'value' => ['type' => PARAM_TEXT]
+                ],
+                'multiple' => true,
+            ],
         ];
     }
 
@@ -109,12 +116,18 @@ class system_report_exporter extends persistent_exporter {
             $filtersform->set_data_for_dynamic_submission();
         }
 
+        // Get the report attributes.
+        $attributes = array_map(static function($key, $value): array {
+            return ['name' => $key, 'value' => $value];
+        }, array_keys($source->get_attributes()), $source->get_attributes());
+
         return [
             'table' => $output->render($table),
             'parameters' => $parameters,
             'filterspresent' => $filterspresent,
             'filtersapplied' => $source->get_applied_filter_count(),
             'filtersform' => $filterspresent ? $filtersform->render() : '',
+            'attributes' => $attributes,
         ];
     }
 }
diff --git a/reportbuilder/classes/local/report/base.php b/reportbuilder/classes/local/report/base.php
index 5abe25d932f..c9c19922d40 100644
--- a/reportbuilder/classes/local/report/base.php
+++ b/reportbuilder/classes/local/report/base.php
@@ -87,6 +87,9 @@ abstract class base {
     /** @var int Default paging size */
     private $defaultperpage = self::DEFAULT_PAGESIZE;
 
+    /** @var array $attributes */
+    private $attributes = [];
+
     /**
      * Base report constructor
      *
@@ -744,4 +747,24 @@ abstract class base {
     public function get_default_per_page(): int {
         return $this->defaultperpage;
     }
+
+    /**
+     * Add report attributes (data-, class, etc.) that will be included in HTML when report is displayed
+     *
+     * @param array $attributes
+     * @return self
+     */
+    public function add_attributes(array $attributes): self {
+        $this->attributes = $attributes + $this->attributes;
+        return $this;
+    }
+
+    /**
+     * Returns the report HTML attributes
+     *
+     * @return array
+     */
+    public function get_attributes(): array {
+        return $this->attributes;
+    }
 }
diff --git a/reportbuilder/templates/local/dynamictabs/editor.mustache b/reportbuilder/templates/local/dynamictabs/editor.mustache
index 92f0d18e1ba..8f04f4d30eb 100644
--- a/reportbuilder/templates/local/dynamictabs/editor.mustache
+++ b/reportbuilder/templates/local/dynamictabs/editor.mustache
@@ -25,6 +25,10 @@
         "type": 1,
         "table": "table",
         "editmode": true,
+        "attributes": [{
+            "name": "data-custom",
+            "value": "1"
+        }],
         "sidebarmenucards": [{
             "menucards": [{
                 "name": "General",
@@ -93,7 +97,8 @@
      data-report-id="{{id}}"
      data-report-type="{{type}}"
      data-parameter="[]"
-     {{#editmode}}data-editing{{/editmode}}>
+     {{#editmode}}data-editing{{/editmode}}
+     {{#attributes}}{{name}}="{{value}}" {{/attributes}}>
     <div class="reportbuilder-wrapper d-flex flex-column flex-lg-row">
         {{#editmode}}
             {{! Menu sidebar }}
diff --git a/reportbuilder/templates/report.mustache b/reportbuilder/templates/report.mustache
index 8912ccfebcc..ff28539a42f 100644
--- a/reportbuilder/templates/report.mustache
+++ b/reportbuilder/templates/report.mustache
@@ -25,6 +25,10 @@
         "contextid": 1,
         "type": 1,
         "parameters": [],
+        "attributes": [{
+            "name": "data-custom",
+            "value": "1"
+        }],
         "table": "table",
         "filterspresent": true,
         "filtersform": "form"
@@ -34,7 +38,8 @@
         data-region="core_reportbuilder/report"
         data-report-id="{{id}}"
         data-report-type="{{type}}"
-        data-parameter="{{parameters}}">
+        data-parameter="{{parameters}}"
+        {{#attributes}}{{name}}="{{value}}" {{/attributes}}>
             <div class="reportbuilder-wrapper">
                 {{#filterspresent}}
                     <div class="dropdown d-flex justify-content-end">
diff --git a/reportbuilder/tests/external/custom_report_exporter_test.php b/reportbuilder/tests/external/custom_report_exporter_test.php
index b50c409c112..297db31ddb0 100644
--- a/reportbuilder/tests/external/custom_report_exporter_test.php
+++ b/reportbuilder/tests/external/custom_report_exporter_test.php
@@ -19,6 +19,7 @@ declare(strict_types=1);
 namespace core_reportbuilder\external;
 
 use advanced_testcase;
+use core_reportbuilder\manager;
 use core_reportbuilder_generator;
 use moodle_url;
 use core_reportbuilder\local\helpers\user_filter_manager;
@@ -46,6 +47,7 @@ class custom_report_exporter_test extends advanced_testcase {
         /** @var core_reportbuilder_generator $generator */
         $generator = $this->getDataGenerator()->get_plugin_generator('core_reportbuilder');
         $report = $generator->create_report(['name' => 'My report', 'source' => users::class, 'default' => false]);
+        manager::get_report_from_persistent($report)->add_attributes(['data-foo' => 'bar', 'data-another' => '1']);
 
         $PAGE->set_url(new moodle_url('/'));
 
@@ -57,6 +59,7 @@ class custom_report_exporter_test extends advanced_testcase {
         $this->assertFalse($export->filterspresent);
         $this->assertEmpty($export->filtersform);
         $this->assertTrue($export->editmode);
+        $this->assertEmpty($export->attributes);
 
         // The following are all generated by additional exporters.
         $this->assertNotEmpty($export->sidebarmenucards);
@@ -77,6 +80,7 @@ class custom_report_exporter_test extends advanced_testcase {
         /** @var core_reportbuilder_generator $generator */
         $generator = $this->getDataGenerator()->get_plugin_generator('core_reportbuilder');
         $report = $generator->create_report(['name' => 'My report', 'source' => users::class, 'default' => false]);
+        manager::get_report_from_persistent($report)->add_attributes(['data-foo' => 'bar', 'data-another' => '1']);
 
         $PAGE->set_url(new moodle_url('/'));
 
@@ -88,6 +92,10 @@ class custom_report_exporter_test extends advanced_testcase {
         $this->assertFalse($export->filterspresent);
         $this->assertEmpty($export->filtersform);
         $this->assertFalse($export->editmode);
+        $this->assertEquals([
+            ['name' => 'data-foo', 'value' => 'bar'],
+            ['name' => 'data-another', 'value' => '1']
+        ], $export->attributes);
 
         // The following are all generated by additional exporters, and should not be present when not editing.
         $this->assertObjectNotHasAttribute('sidebarmenucards', $export);
diff --git a/reportbuilder/tests/external/system_report_exporter_test.php b/reportbuilder/tests/external/system_report_exporter_test.php
index f8ce6f3174c..3a2c90e0641 100644
--- a/reportbuilder/tests/external/system_report_exporter_test.php
+++ b/reportbuilder/tests/external/system_report_exporter_test.php
@@ -71,7 +71,7 @@ class system_report_exporter_test extends advanced_testcase {
         $PAGE->set_url(new moodle_url('/'));
 
         $systemreport = system_report_factory::create(system_report_available::class, context_system::instance(), '', '', 0,
-            ['withfilters' => $withfilters]);
+            ['withfilters' => $withfilters])->add_attributes(['data-foo' => 'bar', 'data-another' => '1']);
 
         $exporter = new system_report_exporter($systemreport->get_report_persistent(), [
             'source' => $systemreport,
@@ -90,5 +90,10 @@ class system_report_exporter_test extends advanced_testcase {
             $this->assertFalse($data->filterspresent);
             $this->assertEmpty($data->filtersform);
         }
+
+        $this->assertEquals([
+            ['name' => 'data-foo', 'value' => 'bar'],
+            ['name' => 'data-another', 'value' => '1']
+        ], $data->attributes);
     }
 }
diff --git a/reportbuilder/upgrade.txt b/reportbuilder/upgrade.txt
index 35c38c6fb7f..a366e6a30ea 100644
--- a/reportbuilder/upgrade.txt
+++ b/reportbuilder/upgrade.txt
@@ -1,6 +1,9 @@
 This file describes API changes in /reportbuilder/*
 Information provided here is intended especially for developers.
 
+=== 4.2 ===
+* New methods `[add|get]_attributes` added to report base class, for including custom attributes in report container HTML
+
 === 4.1 ===
 * New method `add_action_divider()` in base system report class, to allow adding a divider to the action menu.
 * New external method `core_reportbuilder_set_filters` for setting report filter values (plus `setFilters` AJAX repository