PDF often refers to the Portable Document Format in computing.

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

• 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

• Probability density function
• Probability distribution function (disambiguation)

• 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

• 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

• KPDF-CD, a television station in Phoenix, Arizona
• PDF417, or "portable data file 417", a two-dimensional barcode

This disambiguation page lists articles associated with the title PDF.
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