Beyza (Persian: بيضا) is a city in the Central District of Beyza County, Fars province, Iran, serving as both capital of the district and of the county. It is also the administrative center for Beyza Rural District.

At the 2006 National Census, its population was 3,593 in 845 households, when it was in the former Beyza District of Sepidan County. The following census in 2011 counted 4,234 people in 1,148 households. The latest census in 2016 showed a population of 7,252 people in 1,952 households.

In October 2019, the district was separated from the county in the establishment of Beyza County, which was divided into two districts of two rural districts each, with Beyza as its capital and only city.