Sebastian Blomberg was born in Bergisch Gladbach on May 24th, 1972. He studied acting at the renowned Max-Reinhardt-Seminar in Vienna and subsequently started his career in theatre. While pursuing his work on stage – at one point, he became an ensemble member at the theatre on Basel – Blomberg also acted in TV productions like "Dunckel" (1997) and "Himmlische Helden" (2000). In 1999, his popularity increased with Stefan Ruzowitzky's horror hit "Anatomie" ("Anatomy"), in which Blomberg acted alongside Franka Potente.

This was followed by parts in Gregor Schnitzler's directorial debut "Was tun, wenn's brennt?" ("What to Do in Case of Fire", 2001, alongside Til Schweiger), "Väter" ("I'm the Father", 2002) and Dani Levy's award-winning box office success "Alles auf Zucker!" ("Go For Zucker", 2004). In "3 Grad kälter" (2005), Florian Hoffmeister's feature film debut as a director, Sebastian Blomberg played the non-conformist runaway Jan.

He garnered lots of praise for his lead performance as a struggling school teacher in Lars Kraume's award-winning TV-drama "Guten Morgen, Herr Grothe" ("Good Morning, Mr. Grothe", 2007). And in "Der Baader Meinhof Komplex" ("The Baader Meinhof Complex"), Uli Edel's epic about the Red Army Fraction, he convinced as charismatic student leader Rudi Dutschke. Also in 2008, he was a cast member of Wim Wenders' "Palermo Shooting" as well as of Nicolai Rohde's drama "10 Sekunden" ("10 Seconds"), which depicts the harrowing consequences of a plane crash.

In 2009/2010 Blomberg played a supporting role alongside Ulrich Thomsen in the Danish crime series "Blekingegade". They both also featured in the psychological thriller "Das letzte Schweigen" ("The Silence") in 2010, this time with Blomberg in the lead. His next supporting role was in "Wer wenn nicht wir" ("If Not Us, Who?" 2011) the feature debut of documentary filmmaker Andres Veiel. This was followed by a less serious part in Christoph Schaub's comedy "Nachtlärm" ("Lullaby Ride") in 2012. He starred as an unnerved father whose car gets stolen one night – including his baby on the backseat.

The same year he played German Navy officer Hellmuth von Mücke in the WWI drama "Die Männer der Emden" ("Odyssey of Heroes"). In 2014, Blomberg played a starring role as a seasoned business consultant confronted with an idealistic colleague in the satirical comedy "Zeit der Kannibalen" ("Age of Cannibals") by Johannes Naber. For this performance he garnered the Günter Rohrbach Filmpreis - together with Katharina Schüttler and Devid Striesow - as well as the acting award of German Film critics.

The drama "Verfehlung" (2015) featured Blomberg as a Catholic prison priest whose best friend is suspected of being a sex offender.

In Lars Kraume's "Der Staat gegen Fritz Bauer" ("The People vs. Fritz Bauer", 2015) he played a scheming senior public prosecutor; Johannes Naber cast him as the father of Peter Munk's great love in the fairy tale film adaptation "Das kalte Herz" ("Heart of Stone", 2016). Together with the other actors in the improvised social satire "Wellness für Paare" (2016) Blomberg won the German Actor Award for Best Ensemble.

Hans-Christian Schmid's highly acclaimed and multiple award-winning series "Das Verschwinden" (2017) showed him in an intense role as the supposedly distant father of a drug-addicted daughter. In the episode "Zeit der Frosches" (2018) of the popular German TV crime series "Tatort", he played an investigator alongside Heike Makatsch's chief inspector. Again under the direction of Lars Kraume, he impersonated the pedagogue and later politician Max Greil in the Bauhaus series "Die neue Zeit" ("Bauhaus - A New Era", 2019).

Again with Johannes Naber, Blomberg subsequently shot the feature film "Curveball" (2020): Based on a real-life incident, this grotesquely satirical political drama tells the story of a German secret service bioweapons expert (Blomberg), who in the late 1990s became obsessed with the idea that Saddam Hussein possesses weapons of mass destruction. The film celebrated its world premiere at the Berlinale 2020.

Apart from featuring prominently in film and television, Sebastian Blomberg remains a steady presence in German theatre.