Masjid Ahmad in Padang Besar, Perlis is located a few metres from the Perlis-Thailand border. The mosque was officially opened on Friday 6 Zulkaedah 1391H equivalent to 24 December 1971. It was named after the former Menteri Besar of Perlis, the late Tan Sri Sheikh Ahmad Mohd Hashim. Its architecture is in the shape of rumah limas bungkus with a two-tiered roof. At the apex of the roof is a dome and on the side is a minaret.