Dinendra Ruwan Wijewardene (Sinhala:දිනෙන්ද්ර රුවන් විජෙවර්ධන) (born 4 August 1975) (known as Ruwan Wijewardene) is a Sri Lankan politician and currently the Senior advisor to president (Ranil Wickremesinghe) on Climate change. He was the former State Minister of Defence and former Mass Media non-cabinet Minister. He was a former Member of Parliament for Gampaha District. Also he is the Deputy Leader of the United National Party and chief organiser for Kelaniya Electorate.