Yahyalı is a municipality and district located in the Kayseri Province of Turkey. It serves as the southernmost district within the province and covers a total area of 1,587 km2. As of 2022, the district has a recorded population of 35,481.
The geography of Yahyalı is characterized by the Aladağlar Mountains, which are part of the rocky Taurus Mountains and cover the southern portion of the district. Additionally, the Zamantı River passes through the region.