Space Force was a BBC Radio science fiction serial, broadcast in the mid-1980s.

Written by Charles Chilton, it was originally intended to be a sequel to his Journey into Space series (broadcast in the 1950s), using the cast who'd just made a one-off revival of that series (The Return From Mars); while this idea was dropped late in the day, the four characters are nevertheless essentially the same as those from the earlier series, albeit with different names.