Phraekkasa (Thai: แพรกษา, pronounced [pʰrɛ̂ːk.kā.sǎː], also colloquially known as Phraek Sa, pronounced [pʰrɛ̂ːk.sǎː]) is a tambon (sub-district) and neighbourhood in the area of Mueang Samut Prakan district, Samut Prakan province on eastern outskirts Bangkok.

The area dates back to the late Ayutthaya era, the first people who migrated to settle at Phraekkasa.

They are Mon people from Pathum Thani and Pak Lat (now Phra Pradaeng).

Originally, the area was referred to as Phraek Ta Sa[3] (แพรกตาสา, pronounced [pʰrɛ̂ːk.tāː.sǎː]).

Phraekkasa is the eastern part of Mueang Samut Prakan, the capital district of the province.