Sungai Petani is a town in Kuala Muda District, Kedah, Malaysia. The population of the municipal area of Sungai Petani is larger than Keda…Sungai Petani is a town in Kuala Muda District, Kedah, Malaysia. The population of the municipal area of Sungai Petani is larger than Kedah's state capital, Alor Setar. It is located about 55 km south of Alor Setar, and 33 km northeast of George Town, the capital city of the neighbouring state of Penang.