PDF (disambiguation)

PDF often refers to the Portable Document Format in computing.

PDF, pdf, Pdf, PdF or similar may also refer to:

Computing and telecommunications

 * Pop Directional Formatting (Unicode character U+202C), a formatting character in bi-directional formatting
 * Printer description file, describing capabilities of PostScript printers
 * Profile-directed feedback, a compiler optimization better known as Profile-Guided Optimization (PGO)
 * Program Development Facility, in the IBM z/OS operating system
 * Pair distribution function
 * Powder Diffraction File
 * Probability density function

Mathematics

 * Probability density function
 * Probability distribution function (disambiguation)

Organisations

 * Parkinson's Disease Foundation, a medical foundation
 * PDF Solutions, a company based in San Jose, California
 * Peace Development Fund, a non-profit public foundation based in Amherst, Massachusetts

Military

 * Panama Defense Forces
 * People's Defence Force (Myanmar), armed wing of the Burmese government-in-exile since 2021
 * People's Defence Force (Singapore)
 * Permanent Defence Forces, the standing branches of Ireland's military
 * Puntland Dervish Force, Armed force of Puntland

Politics

 * Parti de la France
 * People's Democratic Front (Hyderabad), a political party that existed in India during the early 1950s
 * Party of Progress (Germany) (Partei des Fortschritts), a political party in Germany founded in 2020

Other uses

 * PDF (gene), a gene that in humans encodes the enzyme peptide deformylase
 * Palladium fluoride (PdF), a series of chemical compounds
 * Parton distribution function, in particle physics
 * Peak draw force, in a compound bow in archery
 * Percival David Foundation of Chinese Art
 * Pigment dispersing factor, in biology
 * Planar deformation features, in geology
 * Playa del Fuego, a Delaware art festival
 * Post-Doctoral Fellowship