双溪大年 (马来语:Sungai Petani; 简写: Sg. Petani 或 SP) 马来西亚吉打州最大城市(于2010年取代作为州首府的亚罗士打 ) . 双溪大年坐落于吉打州中部。它与亚罗士打的距离为大约70公里，并与槟城州毗邻。它是吉打州最大的工业城。

双溪大年市的也是全吉打州最多华裔居民的地方如槟城。现今全吉打州人口最多的地方也是这里。亚罗士打市如今则为吉打州的首府和第二大城市，如上海和北京。 双溪大年如今也已经建舍了许多新店屋。双溪大年出入南北大道的收费站近来也已经加宽了许多，大型车道和精明直付Smart TAG道现今也已经准备好了来疏解50%的车流量。

Sungai Petani (abbreviated Sg. Petani or SP; Chinese: 双溪大年) is a town in the Kuala Muda district of the state of Kedah, in the northern part of Peninsular Malaysia. It is about 55 km south of Alor Setar, the capital of Kedah, and about 310 km from Kuala Lumpur. Sungai Petani is the second-largest city in Kedah after Alor Setar. Sungai Petani became an industrialised city in 1990 with Japanese factories and foreign companies during its first establishement. Sungai Petani with multiracial and multicultural community makes the town so unique in term of food, culture, religious building and mixed community. Place to go around the town is Pantai Merdeka, Gunung Jerai, Lembah Bujang, Sungai Merbok, and Penang Island just about 40km from Sungai Petani. Healthcare in Sungai Petani also provided by government-run hospital such as Hospital Sultan Abdul Halim, Pejabat Kesihatan Sungai Petani and private-run heatlthcare centre such Metro Specialist and Pantai Hospital. Shopping in Sungai Petani is available in Amanjaya Mall, Central Square, Petani Parade, SP Plaza, UpTown Baazar, Tesco Hypermarket and Giant supermarkets and Econsave groceries. Almost a million people living in Sungai Petani as the result of housing development in the town since 1980 with Taman Ria as pioneer residence park and large-scale residence park such as Bandar Puteri Jaya, Bandar Amanjaya, Bandar Merbok, and Bukit Banyan as the latest residence park.