Shamna Kasim, also known by the stage name Poorna, is an Indian film actress and model. She began her career as a classical dancer and came to media attention when she took part in the reality dance competition Super Dancer on Amrita TV. She made her film debut in the Malayalam film Manjupoloru Penkutty (2004) and then played supporting roles in several unsuccessful films.

She played her first major role in her Telugu debut film Sri Mahalakshmi, and also played the female lead in her first Tamil film Muniyandi Vilangial Moonramandu.