
David Nykl
Biography
David Nykl (born 7 February 1967 in Prague, Czechoslovakia) is a Czech Canadian actor of film, television, commercials and theater.
After the Soviet invasion in 1968, he and his family left then-Communist Czechoslovakia for Canada. Upon arriving at Victoria, British Columbia, his father found work as a structural engineer and his mother found work as a nurse.
Nykl attended the University of British Columbia, where he majored in liberal arts.
Nykl has appeared heavily in Vancouver and Prague in dozens of theater, film and television productions. Known for his versatility and depth as an actor, he has also produced theatre and film projects, and in 1994 he co-founded Prague's Misery Loves Company Theatre with Richard Toth and Ewan McLaren.
He is known to science fiction fans as the recurring Stargate Atlantis character of Dr. Radek Zelenka, a Czech scientist on Earth's expedition to the "lost city" of Atlantis. His character often provides a foil to the main scientists, who forget the limits of their situation.
He is fluent in Czech, English, French and Spanish. Though his character on Stargate Atlantis speaks English with a Czech accent, Nykl normally speaks with a Canadian accent. Whenever Zelenka spoke Czech in Stargate Atlantis, Nykl was given the lines in English, and he translated them.
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Known For

TV
Supernatural
Lester Morris
2005

TV
Stargate SG-1
Dr. Radek Zelenka
1997

TV
Eureka
Dr. Steven Whiticus
2006

TV
Arrow
Anatoly Knyazev
2012

TV
Psych
Events Coordinator
2006

TV
Fringe
Reverend Marcus
2008

TV
Once Upon a Time
Fisherman
2011

TV
Stargate Atlantis
Dr. Radek Zelenka
2004

TV
Stargate Atlantis
Radek Zelenka
2004

TV
The Dead Zone
Waiter
2002

TV
Resident Alien
Dr. Carl Hodges
2021

TV
Sanctuary
Strickland
2008

TV
Continuum
Sergei
2012

TV
Carnival Row
Constable Boggs
2019

TV
Human Target
Vincent Morgan
2010

TV
Masters of Horror
CSI
2005

TV
Dialing Home
Self
2017

TV
Cold Squad
1998

TV
Minority Report
Eli Winford
2015

TV
El Turco
Prince Francesco di Paulo
2025
Filmography
2025TVDeath by Lightningas Levi Morton2025TVEl Turcoas Prince Francesco di Paulo2021FilmGone Mom: The Disappearance of Jennifer Dulosas Clifford Reed2021TVResident Alienas Dr. Carl Hodges2019FilmPat & Mat: DIY Troublesas Pat (Voice)2019TVThe Sleepersas Gerald Lloyd2019TVCarnival Rowas Constable Boggs2019FilmWilliamas Principal Bernstein2018FilmPat & Mat: Winter Funas Pat (Voice)2017TVDialing Homeas Self2015FilmThe Devoutas Dr. Fisher2015TVMinority Reportas Eli Winford2015FilmAiras Sleeper2015FilmTomorrowlandas Science Teacher2013FilmChupacabra vs. the Alamoas Medical Examiner2012FilmChristmas Miracleas Drake2012TVArrowas Anatoly Knyazev2012FilmCamera Shyas Cliff Gardner2012TVContinuumas Sergei2011TVOnce Upon a Timeas Fisherman2011TVMortal Kombat: Legacyas Lance2010FilmEncounter with Dangeras Elliot Maine2010TVHuman Targetas Vincent Morgan2010FilmThe Beast of Bottomless Lakeas Paoul Moran2009FilmHelenas John2009FilmThe Seamstressas Donny Plachtt2009FilmStargate Atlantis: Fans' Choiceas Dr. Radek Zelenka2008TVSanctuaryas Strickland2008TVFringeas Reverend Marcus2006TVEurekaas Dr. Steven Whiticus2006TVPsychas Events Coordinator2005FilmDreams in the Witch Houseas CSI2005TVMasters of Horroras CSI2005TVSupernaturalas Lester Morris2004FilmPterodactylas Herbert2004TVStargate Atlantisas Dr. Radek Zelenka2003TVJake 2.0as Vasily2002TVThe Dead Zoneas Waiter1999FilmEscape Velocityas Russell1999TVJoan of Arcas Duke of Luxembourg1999FilmPrague Storiesas Richard's Friend (segment "Riziko")1999TVPolicajti z předměstí1998FilmAct of Waras George Willmont1998TVCold Squad1998FilmPrague Duetas Glen Hudson1998FilmHell Mountainas First Corridor Guard1997TVStargate SG-1as Dr. Radek Zelenka1997FilmCrackerjack 2as Cavanaugh1996FilmSacred Cargoas Brother Alexis1996FilmHidden in Silenceas Henek1985TVDanger Bayas Peter