diff --git a/docs/AVAILABLE-FUNCTIONS-AND-OPERATORS.md b/docs/AVAILABLE-FUNCTIONS-AND-OPERATORS.md
index 508d5629..bad99383 100644
--- a/docs/AVAILABLE-FUNCTIONS-AND-OPERATORS.md
+++ b/docs/AVAILABLE-FUNCTIONS-AND-OPERATORS.md
@@ -44,6 +44,7 @@
 | json_object_agg | JSON_OBJECT_AGG | `MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonObjectAgg` | 
 | json_object_keys | JSON_OBJECT_KEYS | `MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonObjectKeys` | 
 | json_strip_nulls | JSON_STRIP_NULLS | `MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonStripNulls` | 
+| json_typeof | JSON_TYPEOF | `MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonTypeof` | 
 | jsonb_array_elements | JSONB_ARRAY_ELEMENTS | `MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonbArrayElements` | 
 | jsonb_agg | JSONB_AGG | `MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonbAgg` | 
 | jsonb_array_elements_text | JSONB_ARRAY_ELEMENTS_TEXT | `MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonbArrayElementsText` | 
diff --git a/docs/INTEGRATING-WITH-SYMFONY.md b/docs/INTEGRATING-WITH-SYMFONY.md
index 4442a2dd..9d471eb7 100644
--- a/docs/INTEGRATING-WITH-SYMFONY.md
+++ b/docs/INTEGRATING-WITH-SYMFONY.md
@@ -106,6 +106,7 @@ doctrine:
                         JSON_STRIP_NULLS: MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonStripNulls
                         TO_JSON: MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\ToJson
                         ROW_TO_JSON: MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\RowToJson
+                        JSON_TYPEOF: MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonTypeof
 
                         # jsonb specific functions
                         JSONB_AGG: MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonbAgg
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonTypeof.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonTypeof.php
new file mode 100644
index 00000000..bdd08151
--- /dev/null
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonTypeof.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
+
+/**
+ * Implementation of PostgreSql JSON_TYPEOF().
+ *
+ * @see https://www.postgresql.org/docs/14/functions-json.html
+ * @since 1.8.0
+ */
+class JsonTypeof extends BaseFunction
+{
+    protected function customiseFunction(): void
+    {
+        $this->setFunctionPrototype('json_typeof(%s)');
+        $this->addNodeMapping('StringPrimary');
+    }
+}
diff --git a/tests/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonTypeofTest.php b/tests/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonTypeofTest.php
new file mode 100644
index 00000000..4efffe4f
--- /dev/null
+++ b/tests/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonTypeofTest.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
+
+use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\JsonTypeof;
+use Tests\MartinGeorgiev\Doctrine\Fixtures\Entity\ContainsJsons;
+
+class JsonTypeofTest extends TestCase
+{
+    protected function getStringFunctions(): array
+    {
+        return [
+            'JSON_TYPEOF' => JsonTypeof::class,
+        ];
+    }
+
+    protected function getExpectedSqlStatements(): array
+    {
+        return [
+            'SELECT json_typeof(c0_.object1) AS sclr_0 FROM ContainsJsons c0_',
+        ];
+    }
+
+    protected function getDqlStatements(): array
+    {
+        return [
+            \sprintf('SELECT JSON_TYPEOF(e.object1) FROM %s e', ContainsJsons::class),
+        ];
+    }
+}