diff --git a/CHANGELOG-WIP.md b/CHANGELOG-WIP.md
index a547181e6f3..8b5f5ab8076 100644
--- a/CHANGELOG-WIP.md
+++ b/CHANGELOG-WIP.md
@@ -7,6 +7,7 @@
 ### Development
 - Added the `encodeUrl()` Twig function. ([#15838](https://github.com/craftcms/cms/issues/15838))
 - Added support for passing aliased field handles into element queries’ `select()`/`addSelect()` methods. ([#15827](https://github.com/craftcms/cms/issues/15827))
+- Added support for appending subpaths to environment variable names in environmental settings (e.g. `$PRIMARY_SITE_URL/uploads`).
 
 ### Extensibility
 - Added `craft\base\RequestTrait::getIsWebRequest()`. ([#15690](https://github.com/craftcms/cms/pull/15690))
diff --git a/src/helpers/App.php b/src/helpers/App.php
index 2ec83f1c2ee..d10f5acfdcd 100644
--- a/src/helpers/App.php
+++ b/src/helpers/App.php
@@ -194,7 +194,7 @@ public static function parseEnv(?string $value): bool|string|null
             return null;
         }
 
-        if (preg_match('/^\$(\w+)$/', $value, $matches)) {
+        if (preg_match('/^\$(\w+)(\/.*)?/', $value, $matches)) {
             $env = static::env($matches[1]);
 
             if ($env === null) {
@@ -202,7 +202,7 @@ public static function parseEnv(?string $value): bool|string|null
                 return $value;
             }
 
-            $value = $env;
+            $value = $env . ($matches[2] ?? '');
         }
 
         if (is_string($value) && str_starts_with($value, '@')) {
diff --git a/src/helpers/Cp.php b/src/helpers/Cp.php
index f0f791c41fa..f7f7eb8b70b 100644
--- a/src/helpers/Cp.php
+++ b/src/helpers/Cp.php
@@ -1102,9 +1102,9 @@ public static function autosuggestFieldHtml(array $config): string
             $value = $config['value'] ?? '';
             if (!isset($config['tip']) && (!isset($value[0]) || !in_array($value[0], ['$', '@']))) {
                 if ($config['suggestAliases'] ?? false) {
-                    $config['tip'] = Craft::t('app', 'This can be set to an environment variable, or begin with an alias.');
+                    $config['tip'] = Craft::t('app', 'This can begin with an environment variable or alias.');
                 } else {
-                    $config['tip'] = Craft::t('app', 'This can be set to an environment variable.');
+                    $config['tip'] = Craft::t('app', 'This can begin with an environment variable.');
                 }
                 $config['tip'] .= ' ' .
                     Html::a(Craft::t('app', 'Learn more'), 'https://craftcms.com/docs/4.x/config#control-panel-settings', [
diff --git a/src/templates/_includes/forms.twig b/src/templates/_includes/forms.twig
index c22f7b215cc..4be3c09036d 100644
--- a/src/templates/_includes/forms.twig
+++ b/src/templates/_includes/forms.twig
@@ -232,7 +232,7 @@
         {% set config = config|merge({
             tip: (config.allowedEnvValues is not defined)
             ? 'This can be set to an environment variable matching one of the option values.'|t('app')
-            : 'This can be set to an environment variable.'|t('app'),
+            : 'This can begin with an environment variable.'|t('app'),
         }) %}
     {% endif %}
     {{ _self.field(config, 'template:_includes/forms/selectize') }}
@@ -324,8 +324,8 @@
         {% if config.tip is not defined and value[0:1] not in ['$', '@'] %}
             {% set config = config|merge({
                 tip: ((config.suggestAliases ?? false)
-                ? 'This can be set to an environment variable, or begin with an alias.'|t('app')
-                : 'This can be set to an environment variable.'|t('app')) ~ ' ' ~ tag('a', {
+                ? 'This can begin with an environment variable or alias.'|t('app')
+                : 'This can begin with an environment variable.'|t('app')) ~ ' ' ~ tag('a', {
                     href: 'https://craftcms.com/docs/4.x/config/#control-panel-settings',
                     class: 'go',
                     text: 'Learn more'|t('app'),
diff --git a/src/translations/en/app.php b/src/translations/en/app.php
index 39af1f38b2d..1c3477bdf03 100644
--- a/src/translations/en/app.php
+++ b/src/translations/en/app.php
@@ -1547,8 +1547,8 @@
     'This can be set to an environment variable with a boolean value ({examples}).' => 'This can be set to an environment variable with a boolean value ({examples}).',
     'This can be set to an environment variable with a value of a [supported time zone]({url}).' => 'This can be set to an environment variable with a value of a [supported time zone]({url}).',
     'This can be set to an environment variable, or a Twig template that outputs an ID.' => 'This can be set to an environment variable, or a Twig template that outputs an ID.',
-    'This can be set to an environment variable, or begin with an alias.' => 'This can be set to an environment variable, or begin with an alias.',
-    'This can be set to an environment variable.' => 'This can be set to an environment variable.',
+    'This can begin with an environment variable or alias.' => 'This can begin with an environment variable or alias.',
+    'This can begin with an environment variable.' => 'This can begin with an environment variable.',
     'This element is conditional' => 'This element is conditional',
     'This field has been modified.' => 'This field has been modified.',
     'This field is conditional' => 'This field is conditional',
diff --git a/tests/unit/helpers/AppHelperTest.php b/tests/unit/helpers/AppHelperTest.php
index 2ad35323915..5e996fffbf9 100644
--- a/tests/unit/helpers/AppHelperTest.php
+++ b/tests/unit/helpers/AppHelperTest.php
@@ -93,9 +93,10 @@ public function testParseEnv(): void
     {
         self::assertNull(App::parseEnv(null));
         self::assertSame(CRAFT_TESTS_PATH, App::parseEnv('$CRAFT_TESTS_PATH'));
+        self::assertSame(CRAFT_TESTS_PATH . '/foo/bar', App::parseEnv('$CRAFT_TESTS_PATH/foo/bar'));
         self::assertSame('CRAFT_TESTS_PATH', App::parseEnv('CRAFT_TESTS_PATH'));
         self::assertSame('$TEST_MISSING', App::parseEnv('$TEST_MISSING'));
-        self::assertSame(Craft::getAlias('@vendor/foo'), App::parseEnv('@vendor/foo'));
+        self::assertSame(Craft::getAlias('@vendor/foo/bar'), App::parseEnv('@vendor/foo/bar'));
     }
 
     /**