Delta-v is a term used in astrodynamics for the total 'effort' to change from one space trajectory to another.
Delta V may also refer to:
Science and technologyedit
Delta-V (Internet Protocol), a Web Versioning and Configuration Management Protocol specified by RFC 3253 for WebDAV
Delta-v (physics), a mathematical symbol representing a change in velocity as a scalar or vector quantity
Delta-v budget (velocity change budget), a term used in astrodynamics for velocity change requirements of propulsive tasks and orbital manoeuvres during a space mission
Delta-V charging method, a charging method for Nickel–metal hydride batteries