PHF

PHF is a three letter acronym meaning:

• Paired Helical Filaments, a term for aggregations of protein in the brain, in conditions such as Alzheimer's disease
• The Pakistan Hockey Federation, national governing body for field hockey
• Patrick Henry Field, the IATA code for the Newport News/Williamsburg International Airport
• Peak Hour Factor, a traffic flow characteristic
• Perfect Hair Forever, an American animated television comedy
• Perfect Hair Forever (band), an alternative rock band from Auckland, New Zealand
• Perfect hash function, a set of hash functions which generate no collisions.
• Potentially Hazardous Food, a food safety classification
• Potomac Horse Fever, an illness affecting horses caused by Neorickettsia risticii.
• Premier Hockey Federation, a professional women's ice hockey league located in the United States & Canada.
• Public Health Foundation
• Putting Hartlepool First, a localist English political party based in Hartlepool.