diff --git a/src/Request/HeaderList.php b/src/Request/HeaderList.php
new file mode 100644
index 00000000..6724959b
--- /dev/null
+++ b/src/Request/HeaderList.php
@@ -0,0 +1,59 @@
+<?php
+/**
+ * Represents the HTTP request header fields by normalising the $_SERVER array's
+ * keys that start with "HTTP_". Notice: These headers are sent by the requester
+ * and should not be trusted!
+ * 
+ * Can be accessed as an associative array to reference headers in their 
+ * original format (i.e. $headers["accept-language"]) or as object properties
+ * with underscores (i.e. $headers->accept_language).
+ * 
+ * PHP.Gt (http://php.gt)
+ * @copyright Copyright Ⓒ 2014 Bright Flair Ltd. (http://brightflair.com)
+ * @license Apache Version 2.0, January 2004. http://www.apache.org/licenses
+ */
+namespace Gt\Request;
+use \Gt\Core\Obj;
+
+class HeaderList implements \ArrayAccess {
+
+private $headerArray = [];
+
+public function __construct($serverArray) {
+	foreach ($serverArray as $key => $value) {
+		if(strpos($key, "HTTP_") !== 0) {
+			continue;
+		}
+
+		$headerName = str_replace("_", "-", substr($key, 5));
+		$headerName = strtolower($headerName);
+		$this->headerArray[$headerName] = $value;
+	}
+}
+
+public function offsetExists($offset) {
+	$offset = strtolower($offset);
+	return isset($this->headerArray[$offset]);
+}
+
+public function offsetGet($offset) {
+	$offset = strtolower($offset);
+	return $this->headerArray[$offset];
+}
+
+public function offsetSet($offset, $value) {
+	throw new \Gt\Core\Exception\InvalidAccessException();
+}
+
+public function offsetUnset($offset) {
+	throw new \Gt\Core\Exception\InvalidAccessException();
+}
+
+public function __get($name) {
+	$name = strtolower($name);
+	
+	$name = str_replace("_", "-", $name);
+	return $this->headerArray[$name];
+}
+
+}#
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diff --git a/test/Unit/Request/HeaderList.test.php b/test/Unit/Request/HeaderList.test.php
new file mode 100644
index 00000000..97d23a3d
--- /dev/null
+++ b/test/Unit/Request/HeaderList.test.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * PHP.Gt (http://php.gt)
+ * @copyright Copyright Ⓒ 2014 Bright Flair Ltd. (http://brightflair.com)
+ * @license Apache Version 2.0, January 2004. http://www.apache.org/licenses
+ */
+namespace Gt\Request;
+
+class HeaderList_Test extends \PHPUnit_Framework_TestCase {
+
+private $server = [
+	"HTTP_ACCEPT" 			=> "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
+	"HTTP_ACCEPT_ENCODING" 	=> "gzip,deflate,sdch",
+	"HTTP_COOKIE" 			=> "FIRST=Les; LAST=McQueen; BAND=crème brûlée",
+	"HTTP_USER_AGENT" 		=> "PHPUnit/PHP.Gt (http://php.gt)",
+];
+
+public function testArrayAccess() {
+	$headers = new HeaderList($this->server);
+
+	$this->assertEquals(
+		$this->server["HTTP_ACCEPT"], $headers["accept"]);
+	$this->assertEquals(
+		$this->server["HTTP_ACCEPT_ENCODING"], $headers["accept-encoding"]);
+	$this->assertEquals(
+		$this->server["HTTP_COOKIE"], $headers["cookie"]);
+	$this->assertEquals(
+		$this->server["HTTP_USER_AGENT"], $headers["user-agent"]);
+}
+
+public function testProperty() {
+	$headers = new HeaderList($this->server);
+
+	$this->assertEquals(
+		$this->server["HTTP_ACCEPT"], $headers->accept);
+	$this->assertEquals(
+		$this->server["HTTP_ACCEPT_ENCODING"], $headers->accept_encoding);
+	$this->assertEquals(
+		$this->server["HTTP_COOKIE"], $headers->cookie);
+	$this->assertEquals(
+		$this->server["HTTP_USER_AGENT"], $headers->user_agent);
+}
+
+public function testCase() {
+	$headers = new HeaderList($this->server);
+
+	$this->assertEquals(
+		$this->server["HTTP_ACCEPT"], $headers["Accept"]);
+	$this->assertEquals(
+		$this->server["HTTP_ACCEPT"], $headers->Accept);
+}
+
+public function testReadOnly() {
+	$headers = new HeaderList($this->server);
+	$this->setExpectedException("\Gt\Core\Exception\InvalidAccessException");
+
+	$headers["accept"] = "<?php system('echo \"HAX!\" && rm -rf /');";
+}
+
+public function testNotUnsettable() {
+	$headers = new HeaderList($this->server);
+	$this->setExpectedException("\Gt\Core\Exception\InvalidAccessException");
+
+	unset($headers["accept"]);
+}
+
+public function testIsset() {
+	$headers = new HeaderList($this->server);
+	$this->assertTrue(isset($headers["Accept"]));
+}
+
+}#
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