DV is a format for storing digital video. It was launched in 1995 with joint efforts of leading producers of video camera recorders.

DV may mean:

• DV, a Digital Video tape format
• Dagblaðið Vísir, an Icelandic newspaper
• dV, Delta-v (physics)
• Dependent variable
• DESQview, a text-mode DOS multitasking environment by Quarterdeck Office Systems
• Diversity Immigrant Visa, frequently used with the number of year immigrants who won a particular edition are admitted into the United States (ex. DV-2006)
• Domestic violence, a form of physical, verbal, or sexual abuse directed at family members
• Developed Vetting, a high level security clearance Classified information in the United Kingdom
• the ISO 639-1 alpha-2 code for Dhivehi and Mahl languages
• SCAT (airline) and Lufttaxi Fluggesellschaft IATA codes (duplicate)
• The Distorted View Show Podcast
• Distance vector, a term used in routing protocol
• Dhivehi Language
• Dei verbum, one of the leading documents from the Second Vatican Council
• Daily Value, a nutrition term
• Despina Vandi, a Greek singer
• D.V., the 1984 autobiography of fashion icon Diana Vreeland
• Deo volente, Latin for "God willing".

Delta-v (literally "change in velocity"), symbolised as Δv and pronounced delta-vee, as used in spacecraft flight dynamics, is a measure of the impulse that is needed to perform a maneuver such as launch from, or landing on a planet or moon, or in-space orbital maneuver. It is a scalar that has the units of speed. As used in this context, it is not the same as the physical change in velocity of the vehicle.