VSD may refer to: .vsd, a file extension for Microsoft Visio diagrams VSD (French magazine) (Vendredi Samedi Dimanche; i.e. "Friday Saturday Sunday"), a French weekly news magazine Vaccine Safety Datalink, a Centers for Disease Control database containing vaccination and health records of over 7 million Americans Variable speed drive, or adjustable-speed drive, is a specific type of a variable-frequency drive Visible surface determination, also known as hidden surface determination Video Single Disc, a video disc format based on laserdisc that only was popular in Japan and the rest of Asia Voluntary Service Detachment, an Australian civil organization during World War II State Security Department of Lithuania, a Lithuanian intelligence agency Victory Star Destroyer, a fictional class of ship in the Star Wars universe Ventilation shutdown, a means of killing livestock Medicine Ventricular septal defect, a defect in the ventricular septum of the heart Virtually safe dose, a concept in regulatory toxicology, applied to carcinogens with no threshold of effects Places Vallivue School District, a school district in Idaho, United States Vancouver Public Schools, a school district in Vancouver, Washington, United States Vancouver School District, a school district in Vancouver, British Columbia, Canada Vicksburg-Warren School District, a school district based in Vicksburg, Mississippi, United States