PHA may refer to:
Science and technology Phytohaemagglutinin, a type of lectin in plants Polyhydroxyalkanoate, natural polyesters Potentially hazardous asteroid Process hazard analysis of an industrial process Pseudohypoaldosteronism, a condition that mimics hypoaldosteronism but with high levels of aldosteron Pulse-height analyzer, an electronic instrument
Organizations Partnership for a Healthier America, US Pakistan Housing Authority Parks and Horticulture Authority, Lahore, Pakistan Philadelphia Housing Authority, US Prince Hall Affiliated, US Private Hospitals Association (Jordan) Pulmonary Hypertension Association, US Puntland Highway Authority, Somalia
Placenames Amphoe Pha Khao, Loei Province, Thailand Amphoe Phu Pha Man, Khon Kaen Province, Thailand Amphoe Tha Wang Pha, Nan Province, northern Thailand Amphoe Thong Pha Phum, Kanchanaburi Province, Thailand Cẩm Phả, Quảng Ninh Province, Vietnam Ko Pha Ngan, an island in the Gulf of Thailand Pha Oudom District, Bokeo Province, Laos Pha Taem, a national park in Thailand Pha That Luang, a Buddhist stupa in Vientiane, and a national symbol of Laos Than Sadet–Ko Pha-ngan National Park, Thailand
People Hso Khan Pha (1938–2016), Burmese geologist Jazze Pha (stage name of Phalon Anton Alexander), American rapper, songwriter and producer Jazze Pha production discography Pha Terrell (1910–1945), American jazz singer
Other Anime Syuukan DX! Mi-Pha-Pu, a Japanese anime series Pha Lai Power Station, Vietnam Peripheral Heart Action Training in bodybuilding Pha (Indic), a consonant