彭亨州（马来语：Pahang）是西马来西亚最大的州属，州首府为关丹（Kuantan），皇城位于北根（Pekan）。马来西亚半岛最高山峰大汉山（Gunung Tahan）位于彭亨州北部，面积35,964平方公里，人口1,448,000。州最高统治者为苏丹阿末沙（Sultan Haji Ahmad Shah Al-Mustain Billah ibni Almarhum Sultan Sir Abu Bakar Riayatuddin Al-Muadzam Shah）。也被称为“Pahang Darul Makmur” (达鲁马克穆尔维)。

Pahang (Malay pronunciation: [paˈhaŋ]) is the third largest state in Malaysia, after Sarawak and Sabah, and the largest in Peninsular Malaysia. The state occupies the huge Pahang River river basin. It is bordered to the north by Kelantan, to the west by Perak, Selangor, Negeri Sembilan, to the south by Johor and to the east by Terengganu and the South China Sea.