'''Second stage''' may refer to
==Spaceflight== * The second stage of a multistage rocket **Delta Cryogenic Second Stage **Falcon 1 second-stage **S-II second stage **Short nozzle second stage
==Other uses== *Second Stage Theater, theatre company in New York City *Mariinsky Theatre Second Stage, second part of a theatre complex in Saint Petersburg, Russia *''The Second Stage'', 1981 book by Betty Friedan *''Second Stage Lensmen'', 1953 science fiction novel by author Edward E. Smith *Second stage manufacturer, company that installs equipment to complete a vehicle
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