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The Best Action TV Shows of 2021

Updated April 21, 2021 2.6k votes 318 voters 22.8k views43 items

List RulesVote up the best action series that aired new episodes during the 2021 calendar year.

This list looks at the best current television action series that that will be airing new episodes in 2021. The best action series in 2021 include dramas, horror, superhero shows, spy thrillers, and even a heists. Which are the best new and returning action shows in 2021?

A really good action television series catches us up in its spell and shows like The Blacklist have kept us on the edge of our seats for years, though newer shows such as The Rookie are just as action-packed. Superhero shows and comic book TV series are both big parts of the best action series in 2021, and that of course includes The Boys and CW Arrowverse series like The Flash and Batwoman. Other great action series airing new episodes in 2021 include action sci-fi shows like The Expanse and the Spanish series Money Heist on Netflix. But not all action comes at a nerdy genre price, several 2021 action series are also good ol' crime dramas and tense procedurals, like Gangs of London, and Chicago Fire.

Which television action series are you going to watch in 2021? Keep the top of this list action-packed by voting up the best new and returning action TV shows to air in 2021.

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    The Blacklist

    James Spader, Megan Boone

    PremieredSeptember 23, 2013

    NetworkNational Broadcasting Company

    The Blacklist (NBC, 2013) is an American crime thriller television series created by Jon Bokenkamp. In exchange for immunity from prosecution, a high-profile criminal (James Spader) volunteers to...  more

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    67
    32

    Gangs of London

    James Zeiss, Vanessa Molinelli

    PremieredDecember 3, 2016

    NetworkOxygen

    Gangs of London (Sky, 2020) is a British action–crime drama television series. When the head of a criminal organization is assassinated, the sudden power vacuum his death creates threatens the...  more

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    70
    37

    The Last Kingdom

    Alexander Dreymon, David Dawson

    PremieredOctober 10, 2015

    NetworkBBC America

    The Last Kingdom (BBC America, 2015) is a British historical fiction television series based on Bernard Cornwell's The Saxon Stories series of novels. In 872 England, an unlikely hero (Alexander...  more

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    50
    20

    The Falcon and The Winter Soldier

    Anthony Mackie, Sebastian Stan

    PremieredMarch 19, 2021

    NetworkDisney+

    The Falcon and The Winter Soldier (Disney+, 2021) is an American television limited series based on the Marvel Comics' characters Sam Wilson/Falcon (Anthony Mackie) and Bucky Barnes/Winter Soldier...  more

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    82
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    The Boys

    Karl Urban, Jack Quaid

    PremieredJuly 26, 2019

    NetworkAMZONOV

    The Boys (Amazon Video, 2019) is an American superhero drama web television series created by Eric Kripke, Evan Goldberg, and Seth Rogen, based on the comic book by Garth Ennis and Darick Robertson....  more

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    54
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    The Expanse

    Steven Strait, Cas Anvar

    PremieredDecember 14, 2015

    NetworkSYFY

    The Expanse (Syfy, 2015) is an American science fiction television series developed by Mark Fergus and Hawk Ostby, based on the novels by James S. A. Corey. In a future where humanity has colonized...  more

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    65
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    Money Heist

    Pedro Alonso, Úrsula Corberó

    PremieredMay 2, 2017

    NetworkANTENA3

    Money Heist (Antena 3/Netflix, 2017) is a Spanish heist television series created by Álex Pina. A group of very peculiar robbers assault the Factory of Moneda and Timbre to carry out the most perfect...  more

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    57
    35

    SEAL Team

    David Boreanaz, Max Thieriot

    PremieredSeptember 27, 2017

    NetworkCBS Corporation

    SEAL Team (CBS, 2017) is an American drama series created by Ben Cavell. The drama follows the lives of elite Navy SEALs Jason Hayes (David Boreanaz) and Clay Spenser (Max Thieriot) as they train,...  more

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  • 9
    52
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    Condor

    Max Irons, Brendan Fraser

    Premiered2018

    NetworkAudience

    Condor (Audience, 2018) is an American television series created by Todd Katzburg and Jason Smilovic, based on the novel by James Grady. Young CIA analyst Joe Turner (Max Irons) has his idealism...  more

    More 

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  • 10
    51
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    SWAT

    Shemar Moore, Alex Russell

    PremieredNovember 2, 2017

    NetworkCBS Corporation

    S.W.A.T. (CBS, 2017) is an American drama series based on the 1975 series of the same name created by Robert Hamner. Locally born and bred S.W.A.T. lieutenant Hondo Harrelson (Shemar Moore) is torn...  more

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    Snowpiercer

    Jennifer Connelly, Daveed Diggs

    PremieredMay 17, 2020

    NetworkTurner Network TV

    Snowpiercer (TNT, 2020) is an American television series based on the French graphic novel Le Transperceneige created by Jacques Lob, Benjamin Legrand and Jean-Marc Rochette. Set seven years after...  more

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    The Rookie

    Nathan Fillion, Mekia Cox

    PremieredOctober 16, 2018

    NetworkAmerican Broadcasting Company

    The Rookie (ABC, 2018) is an American crime drama television series created by Alexi Hawley, based on true events. With dreams of being a police officer for the Los Angeles Police Department,...  more

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    The Walking Dead

    Norman Reedus, Melissa McBride

    PremieredOctober 31, 2010

    NetworkAMC

    The Walking Dead (AMC, 2010) is an American post-apocalyptic horror television series developed by Frank Darabont, based on the comic book series by Robert Kirkman, Tony Moore, and Charlie Adlard....  more

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    Doom Patrol

    Brendan Fraser, Matt Bomer

    PremieredFebruary 15, 2019

    NetworkDCUNSTR

    Doom Patrol (DC Universe, 2019) is an American superhero drama web television series based on the DC Comics superhero team created by Arnold Drake, Bob Haney, and Bruno Premiani. Led by Dr. Niles...  more

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    25
    22

    Blue Bloods

    Tom Selleck, Donnie Wahlberg

    PremieredSeptember 24, 2010

    NetworkCBS Corporation

    Blue Bloods is an American police procedural drama series shown on CBS in the United States and Canada and on Sky Atlantic in the United Kingdom. The series is filmed on location in New York City...  more

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    Queen of the South

    Alice Braga, Hemky Madera

    PremieredJune 21, 2016

    NetworkUSA Network

    Queen of the South (USA, 2016) is an American television drama series adapted from the successful telenovela La Reina del Sur on sister network Telemundo and the book of the same name by Spanish...  more

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    28
    31

    9-1-1

    Angela Bassett, Peter Krause

    PremieredJanuary 3, 2018

    NetworkFOX Broadcasting Co.

    9-1-1 (Fox, 2018) is an American procedural drama television series created by Ryan Murphy and Brad Falchuk. The show explores the high-pressure experiences of police, paramedics and firefighters who...  more

    More 

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    Kung Fu

    Olivia Liang, Shannon Dang

    PremieredApril 7, 2021

    NetworkCW Network

    Kung Fu (The CW, 2021) is a American martial arts action-adventure drama series created by Christina M. Kim and based on the 1972 television series of the same name created by Ed Spielman. Set in the...  more

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    Chicago P.D.

    Jason Beghe, Patrick Flueger

    PremieredJanuary 8, 2014

    NetworkNational Broadcasting Company

    Chicago P.D. (NBC, 2014) is an American police procedural drama television series created by Dick Wolf and Matt Olmstead. The show follows the Chicago Police Department uniformed cops who patrol the...  more

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    Alex Rider

    Otto Farrant, Brenock O'Connor

    PremieredJune 4, 2020

    NetworkAMZONOV

    Alex Rider (Prime Video, 2020) is a British action, spy, thriller based on novel series of the same name by Anthony Horowitz. The series follows London teenager Alex Rider, who is recruited by the...  more

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  • 21
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    The Flash

    Grant Gustin, Candice Patton

    PremieredOctober 7, 2014

    NetworkCW Network

    The Flash (The CW, 2014) is an American superhero television series developed by Greg Berlanti, Andrew Kreisberg, and Geoff Johns, based on the DC Comics character. CSI Barry Allen (Grant Gustin)...  more

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    Walker

    Jared Padalecki, Kale Culley

    PremieredJanuary 21, 2021

    NetworkCW Network

    Walker (The CW, 2021) is an American western, action-drama television series written by Anna Fricke and a reboot of the television series Walker, Texas Ranger. It focuses on Walker as he returns from...  more

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    24
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    Fear the Walking Dead

    Lennie James, Alycia Debnam-Carey

    PremieredAugust 23, 2015

    NetworkAMC

    Fear of the Walking Dead (AMC, 2015) is an American post-apocalyptic horror drama television series created by Robert Kirkman and Dave Erickson, and prequel series to The Walking Dead, which is based...  more

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  • 24
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    Legends of Tomorrow

    Brandon Routh, Dominic Purcell

    PremieredJanuary 21, 2016

    NetworkCW Network

    DC's Legends of Tomorrow (The CW, 2016) is an American superhero action-adventure television series spin-off from Arrow and The Flash, existing in the same fictional universe. Intending to stop him,...  more

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  • 25
    25
    37

    Magnum, P.I.

    Jay Hernandez, Perdita Weeks

    PremieredSeptember 24, 2018

    NetworkCBS Corporation

    Magnum, P.I. (CBS, 2018) is an American crime drama series, and a remake of the 1980 series. An ex-Navy SEAL (Jay Hernandez) returns home from Afghanistan and uses his military skills to become a...  more

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