Onebala blandiella is a moth in the Gelechiidae family. It was described by Walker in 1864. It is found in Sri Lanka, India and Burma. Adults are fawn-colour, with a slight cinereous tinge, the forewings with slight metallic-green reflections and a large oblong dark brown cinereous-bordered spot in the disc before the middle, as well as a very large exterior triangular dark brown cinereous-bordered spot, which has its base on the costa and extends to the interior border. The hindwings are slightly gilded. The larvae roll the leaves of Lamium species.