帕碧罗阇（泰语：สมเด็จพระเพทราชา，1632年－1703年），是暹罗大城王国班普銮王朝的第一任君主。他原先是那莱王的象队统领。那莱王宠信希腊人华尔康，施行向西方积极开放的政策。在华尔康的劝说下，那莱王答应法国国王路易十四割让曼谷和墨吉给法国。1688年，那莱王病危，华尔康企图拥立信仰天主教的王子亚派耶脱为王，帕碧罗阇立即发动政变，逮捕并处死了华尔康和亚派耶脱二人。此后，帕碧罗阇重兵包围曼谷，迫使驻暹法军退出暹罗。帕碧罗阇在那莱王死后登基为王，巴沙通王朝结束。

Phetracha (alternative spellings: Bedraja, P'etraja, Petraja, Petratcha; also called Phra Phetracha; Thai:สมเด็จพระเพทราชา; 1632–1703) was a king of the Ayutthaya kingdom in Thailand, usurping the throne from his predecessor King Narai and founding the Ban Phlu Luang dynasty, the final one of the Ayutthaya kingdom. Originally a member of king Narai's extended family (two of his relatives were among Narai's wives), he was a trusted councilor of Narai, and leader of the Royal Elephant Corps. However, in 1688 he led the Siamese revolution of 1688, had Narai's heirs executed, and by marrying Narai's only daughter took the throne of Ayutthaya kingdom upon Narai's death. He reversed the pro-Western policies of Narai, ejecting foreigners from the kingdom, and launched the Siege of Bangkok, to exile all French troops from Siam. As a result, Siam stayed isolated from Western contact until the 19th century.