Sputnik (Спутник, Russian for "satellite"[1]) is a spacecraft launched under the Soviet space program. "Sputnik 1", "Sputnik 2" and "Sputnik 3" were the official Soviet names of those objects, while the remaining designations in the series ("Sputnik 4" and so on) were not official names, but were names applied in the West, to objects whose original Soviet names may not have been known at the time.

Spacecraft officially named Sputnik

Spacecraft with names containing Sputnik

Being the Russian term for "satellite", the word Sputnik has appeared in the names of other spacecraft:

Spacecraft designated "Sputnik" in the West

These objects are listed with their official Soviet names: