Shirahama (白浜町, Shirahama-chō) was a town located in Awa District, Chiba Prefecture, Japan.

The town had a temperate maritime climate with hot, humid summers and mild, cool winters.

On March 20, 2006, Shirahama, along with the towns of Chikura, Maruyama, Tomiura, Tomiyama and Wada, and the village of Miyoshi (all from Awa District), was merged to create the city of Minamibōsō.

Both "machi" and "cho" are written the same way in Japanese, but the different pronunciations convey the information that Shirahama is now a neighborhood within Minamibōsō rather than its own municipality.

The economy of Shirahama was largely based on commercial fishing, horticulture (primarily herbs and flowers), and summer tourism.