The Saturn Award for Best Science Fiction Television Series is one of the annual awards given by the Academy of Science Fiction, Fantasy and Horror Films. The Saturn Awards, which are the oldest film and series-specialized awards to reward science fiction, fantasy, and horror achievements, included the category for the first time at the 42nd Saturn Awards ceremony, when the Saturn Award went through major changes in their television categories. It specifically rewards science fiction on television. At the 50th Anniversary Saturn Awards, the category was split to recognize both network/cable series and streaming series however, the categories were merged again at the subsequent 51st Saturn Awards.
The winners are listed in bold.
(NOTE: Year refers to year of eligibility, the actual ceremonies are held the following year)