diff --git a/src/Dictionary.php b/src/Dictionary.php
index 76405ed..d747156 100644
--- a/src/Dictionary.php
+++ b/src/Dictionary.php
@@ -9,6 +9,24 @@ class Dictionary implements \IteratorAggregate
      */
     protected $value = [];
 
+    public static function fromArray(array $array): Dictionary
+    {
+        $dictionary = new static();
+
+        foreach ($array as $key => $value) {
+            if (!$value instanceof TupleInterface) {
+                if (is_array($value)) {
+                    $value = InnerList::fromArray($value);
+                } else {
+                    $value = new Item($value);
+                }
+            }
+            $dictionary->{$key} = $value;
+        }
+
+        return $dictionary;
+    }
+
     public function __get($name)
     {
         return $this->value[$name] ?? null;
diff --git a/src/InnerList.php b/src/InnerList.php
index 14cc39d..c35152a 100644
--- a/src/InnerList.php
+++ b/src/InnerList.php
@@ -19,6 +19,20 @@ public function __construct(array $value, ?object $parameters = null)
         }
     }
 
+    public static function fromArray(array $array): InnerList
+    {
+        $list = new static([]);
+
+        foreach ($array as $item) {
+            if (!$item instanceof TupleInterface) {
+                $item = new Item($item);
+            }
+            $list->value[] = $item;
+        }
+
+        return $list;
+    }
+
     private static function validateItemType($value): void
     {
         if (is_object($value)) {
diff --git a/src/OuterList.php b/src/OuterList.php
index 290746d..b72bd49 100644
--- a/src/OuterList.php
+++ b/src/OuterList.php
@@ -18,6 +18,23 @@ public function __construct($value = [])
         $this->value = $value;
     }
 
+    public static function fromArray($array): OuterList
+    {
+        $list = new static();
+        foreach ($array as $value) {
+            if (!$value instanceof TupleInterface) {
+                if (is_array($value)) {
+                    $value = InnerList::fromArray($value);
+                } else {
+                    $value = new Item($value);
+                }
+            }
+            $list[] = $value;
+        }
+
+        return $list;
+    }
+
     private static function validateItemType($value): void
     {
         if (is_object($value)) {
diff --git a/src/Parameters.php b/src/Parameters.php
index a0ff4a8..6fce0f9 100644
--- a/src/Parameters.php
+++ b/src/Parameters.php
@@ -9,7 +9,7 @@ class Parameters implements \IteratorAggregate
      */
     protected $value = [];
 
-    public static function fromArray($array): Parameters
+    public static function fromArray(array $array): Parameters
     {
         $parameters = new static();
         $parameters->value = $array;
diff --git a/tests/DictionaryTest.php b/tests/DictionaryTest.php
index 3c9a195..854c480 100644
--- a/tests/DictionaryTest.php
+++ b/tests/DictionaryTest.php
@@ -3,6 +3,8 @@
 namespace gapple\Tests\StructuredFields;
 
 use gapple\StructuredFields\Dictionary;
+use gapple\StructuredFields\InnerList;
+use gapple\StructuredFields\Item;
 use PHPUnit\Framework\TestCase;
 
 class DictionaryTest extends TestCase
@@ -20,4 +22,26 @@ public function testPropertyAccess()
         unset($dictionary->key);
         $this->assertFalse(isset($dictionary->key));
     }
+
+    public function testFromArray()
+    {
+        $dictionary = Dictionary::fromArray([
+            'one' => true,
+            'two' => new Item(false),
+            'three' => [
+                'four',
+                new Item('five'),
+            ],
+        ]);
+
+        $expected = new Dictionary();
+        $expected->one = new Item(true);
+        $expected->two = new Item(false);
+        $expected->three = new InnerList([
+            new Item('four'),
+            new Item('five'),
+        ]);
+
+        $this->assertEquals($expected, $dictionary);
+    }
 }
diff --git a/tests/OuterListTest.php b/tests/OuterListTest.php
index eaddcde..d56a347 100644
--- a/tests/OuterListTest.php
+++ b/tests/OuterListTest.php
@@ -2,6 +2,8 @@
 
 namespace gapple\Tests\StructuredFields;
 
+use gapple\StructuredFields\InnerList;
+use gapple\StructuredFields\Item;
 use gapple\StructuredFields\OuterList;
 use PHPUnit\Framework\TestCase;
 
@@ -122,4 +124,27 @@ public function testAppendInvalidItem($value)
         $list = new OuterList();
         $list[] = $value;
     }
+
+    public function testFromArray()
+    {
+        $dictionary = OuterList::fromArray([
+            true,
+            new Item(false),
+            [
+                'four',
+                new Item('five'),
+            ],
+        ]);
+
+        $expected = new OuterList([
+            new Item(true),
+            new Item(false),
+            new InnerList([
+                new Item('four'),
+                new Item('five'),
+            ]),
+        ]);
+
+        $this->assertEquals($expected, $dictionary);
+    }
 }