Spacemaster or Space Master may refer to:

• Joint European Master in Space Science and Technology or short SpaceMaster, an Erasmus Mundus programme in Europe

• Martin Marietta Spacemaster, Space Shuttle proposal

• Space Master, Italian electro-musical group of the 1990s

• Spacemaster, science fiction role-playing game

• Trusty Spacemaster, a small wheeled bicycle made by Trusty Manufacturing in the 1960s and 1970s

• Zeiss SpaceMaster, a planetarium projector