SDF

SDF may refer to:


 * Simple Data format: By George H. Fisher, Space Sciences Lab, UC Berkeley,
 * Standard Delay Format: A standard data structure for timing data,
 * Structure Data File: A file format for a chemical table file.
 * Starlink Data Format: A format for astronomical data, developed by the Starlink Project
 * Tabular Data Package: A format from the Data Protocols Team for publishing and sharing data (formerly known as Simple Data Format),
 * Visual Studio IntelliSense Database File