The Saturn Award for Best Action-Thriller Television Series is one of the annual awards given by the American Academy of Science Fiction, Fantasy & 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 action and thriller 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)

• 4 nominations – Better Call Saul, Riverdale
• 2 nominations – Animal Kingdom, Bates Motel, Fargo, Jack Ryan, The Last Ship, The Librarians, Mr. Mercedes, Mr. Robot, Outlander, Yellowjackets

• 4 wins – Better Call Saul

• Saturn Award for Best Network Television Series
• Saturn Award for Best Syndicated/Cable Television Series
• Saturn Award for Best Youth-Oriented Television Series
• Saturn Award for Best Streaming Science Fiction, Action & Fantasy Series