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.