diff --git a/library/Exceptions/SubdivisionCode/ThSubdivisionCodeException.php b/library/Exceptions/SubdivisionCode/ThSubdivisionCodeException.php
new file mode 100644
index 00000000..33b1164b
--- /dev/null
+++ b/library/Exceptions/SubdivisionCode/ThSubdivisionCodeException.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Respect/Validation.
+ *
+ * (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
+ *
+ * For the full copyright and license information, please view the "LICENSE.md"
+ * file that was distributed with this source code.
+ */
+
+namespace Respect\Validation\Exceptions\SubdivisionCode;
+
+use Respect\Validation\Exceptions\SubdivisionCodeException;
+
+/**
+ * Exception class for Thailand subdivision code.
+ *
+ * ISO 3166-1 alpha-2: TH
+ */
+class ThSubdivisionCodeException extends SubdivisionCodeException
+{
+    public static $defaultTemplates = array(
+        self::MODE_DEFAULT => array(
+            self::STANDARD => '{{name}} must be a subdivision code of Thailand',
+        ),
+        self::MODE_NEGATIVE => array(
+            self::STANDARD => '{{name}} must not be a subdivision code of Thailand',
+        ),
+    );
+}
diff --git a/library/Rules/SubdivisionCode/ThSubdivisionCode.php b/library/Rules/SubdivisionCode/ThSubdivisionCode.php
new file mode 100644
index 00000000..f6489e08
--- /dev/null
+++ b/library/Rules/SubdivisionCode/ThSubdivisionCode.php
@@ -0,0 +1,106 @@
+<?php
+
+/*
+ * This file is part of Respect/Validation.
+ *
+ * (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
+ *
+ * For the full copyright and license information, please view the "LICENSE.md"
+ * file that was distributed with this source code.
+ */
+
+namespace Respect\Validation\Rules\SubdivisionCode;
+
+use Respect\Validation\Rules\AbstractSearcher;
+
+/**
+ * Validator for Thailand subdivision code.
+ *
+ * ISO 3166-1 alpha-2: TH
+ *
+ * @link http://www.geonames.org/TH/administrative-division-thailand.html
+ */
+class ThSubdivisionCode extends AbstractSearcher
+{
+    public $haystack = array(
+        '10', // Bangkok
+        '11', // Samut Prakan
+        '12', // Nonthaburi
+        '13', // Pathum Thani
+        '14', // Phra Nakhon Si Ayutthaya
+        '15', // Ang Thong
+        '16', // Lop Buri
+        '17', // Sing Buri
+        '18', // Chai Nat
+        '19', // Saraburi
+        '20', // Chon Buri
+        '21', // Rayong
+        '22', // Chanthaburi
+        '23', // Trat
+        '24', // Chachoengsao
+        '25', // Prachin Buri
+        '26', // Nakhon Nayok
+        '27', // Sa Kaeo
+        '30', // Nakhon Ratchasima
+        '31', // Buri Ram
+        '32', // Surin
+        '33', // Si Sa Ket
+        '34', // Ubon Ratchathani
+        '35', // Yasothon
+        '36', // Chaiyaphum
+        '37', // Amnat Charoen
+        '38', // Bueng Kan
+        '39', // Nong Bua Lam Phu
+        '40', // Khon Kaen
+        '41', // Udon Thani
+        '42', // Loei
+        '43', // Nong Khai
+        '44', // Maha Sarakham
+        '45', // Roi Et
+        '46', // Kalasin
+        '47', // Sakon Nakhon
+        '48', // Nakhon Phanom
+        '49', // Mukdahan
+        '50', // Chiang Mai
+        '51', // Lamphun
+        '52', // Lampang
+        '53', // Uttaradit
+        '54', // Phrae
+        '55', // Nan
+        '56', // Phayao
+        '57', // Chiang Rai
+        '58', // Mae Hong Son
+        '60', // Nakhon Sawan
+        '61', // Uthai Thani
+        '62', // Kamphaeng Phet
+        '63', // Tak
+        '64', // Sukhothai
+        '65', // Phitsanulok
+        '66', // Phichit
+        '67', // Phetchabun
+        '70', // Ratchaburi
+        '71', // Kanchanaburi
+        '72', // Suphanburi
+        '73', // Nakhon Pathom
+        '74', // Samut Sakhon
+        '75', // Samut Songkhram
+        '76', // Phetchaburi
+        '77', // Prachuap Khiri Khan
+        '80', // Nakhon Si Thammarat
+        '81', // Krabi
+        '82', // Phang Nga
+        '83', // Phuket
+        '84', // Surat Thani
+        '85', // Ranong
+        '86', // Chumpon
+        '90', // Songkhla
+        '91', // Satun
+        '92', // Trang
+        '93', // Phattalung
+        '94', // Pattani
+        '95', // Yala
+        '96', // Narathiwat
+    );
+
+    public $compareIdentical = true;
+}