By accessing the magento collections we can get country list in magento,
Here is the code to get all the countries in magento

<?php

   $collection = Mage::getModel('directory/country')->getCollection();    
   foreach ($collection as $country) 
   {
       $cid = $country->getId();
       $cname = $country->getName();
       echo 'Country ID -> '.$cid.' Country Name -> '.$cname.'<br/>';
                              
   }
?>

Hope you get country list in magento using this code snippet.