- Source: 315 (disambiguation)
315 may refer to:
315 (year)
315 BC, a calendar year
315 (number), the natural number following 314 and preceding 316
Project 315, a nonprofit in Israel
NGC 315, an elliptical galaxy
315th Operations Group, a military unit
315th Air Division, a military unit
315th Airlift Wing, a military unit
315th Cyberspace Operations Squadron, a military unit
315th Rifle Division (Soviet Union), a former military unit
315th Fighter Squadron, a military unit
315 Constantia, a main-belt asteroid
315 series, a Japanese train type
NCR 315, a 1962 second-generation computer