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Otto Karl Robert Wernicke (30 September 1893, Osterode am Harz – 7 November 1965) was a German actor. He was best known for his role as police inspector Karl Lohmann in the two Fritz Lang films M and The Testament of Dr. Mabuse. He was the first one to portray Captain Smith in the first "official" Titanic film.
Wernicke was married to a Jewish woman. Only due to a special permit was he allowed to continue his work in Nazi Germany.
| 1959 | Immer die Mädchen as Diener Adam Fröschl |
| 1956 | Das Sonntagskind as Willowitz |
| 1956 | Studentin Helene Willfüer as Dr. Rainer sr. |
| 1955 | Himmel ohne Sterne |
| 1951 | Schatten über Neapel as Pietro |
| 1951 | Amore e sangue |
| 1950 | Die fidele Tankstelle as Gustav Krause |
| 1950 | Vom Teufel gejagt as Herr Dakar |
| 1950 | Wer fuhr den grauen Ford? as Kriminalkommissar Thieme |
| 1949 | Du bist nicht allein as Martin Jürgens |
| 1949 | Amico as Robert Kornagel, Konditormeister |
| 1948 | Lang ist der Weg as doctor |
| 1947 | Zwischen gestern und morgen |
| 1945 | Kolberg as Bauer Werner |
| 1945 | Der Fall Molander as Kunsthändler |
| 1945 | Kamerad Hedwig as Fritz Beier |
| 1944 | Das Leben ruft as Der Vater |
| 1944 | Seinerzeit zu meiner Zeit as Amtgerichtsrat Witt |
| 1944 | Der große Preis as Obermeister Kramp |
| 1943 | Titanic as Kapitän Edward J. Smith |
| 1942 | Sein Sohn as Vater Brugg, Geschäftsführer bei Hellmers |
| 1942 | Der Seniorchef as Georg von Schulte, Pferdezüchter |
| 1942 | Der große König as Oberst Rochow |
| 1941 | Die Kellnerin Anna as Ludwig Burgstaller |
| 1941 | Heimkehr as Old Manz |
| 1940 | Was wird hier gespielt? |
| 1939 | Maria Ilona as Fürst Windischgrätz |
| 1939 | Der Stammbaum des Dr. Pistorius as Franz Tettenborn, Schuhmachermeister |
| 1939 | Johannisfeuer as Vogelreuter |
| 1939 | D III 88 as Oberwerkmeister Bonicke |
| 1939 | Gold in New Frisco as Jonathan Pepper |
| 1939 | Silvesternacht am Alexanderplatz as Gast im 'Elite' |
| 1939 | Drei wunderschöne Tage |
| 1938 | Dreizehn Mann und eine Kanone |
| 1938 | Liebesbriefe aus dem Engadin as Thomas Viertinger, Hotelier |
| 1938 | Nordlicht as Kaufmann Hansen |
| 1938 | Geheimzeichen LB 17 as Police Commissar Borel |
| 1938 | Eine Frau kommt in die Tropen as Verwalter Miller |
| 1938 | Wie einst im Mai as Schradecke, Stellmacher |
| 1938 | Rätsel um Beate as Vater Hübner - Schmied |
| 1938 | Der Katzensteg as Gastwirt Merckel |
| 1938 | Das große Abenteuer as Kriminalrat |
| 1938 | Stimme des Blutes |
| 1937 | Autobus S as 'Kapitän' Kröker |
| 1937 | Manege as Jan Morell |
| 1937 | Heimweh as Stober, Pastor |
| 1937 | Wie der Hase läuft as Warnecke, Ortsvorsteher in Pümpelhausen |
| 1937 | Gleisdreieck as Scheffler - Aufsichtsbeamter |
| 1936 | Onkel Bräsig as Onkel Bräsig |
| 1936 | Das Schloß in Flandern as Bonnet - Agent |
| 1936 | Straßenmusik as Godemann - Gastwirt |
| 1936 | Arzt aus Leidenschaft as Geheimrat Grimm, Chefarzt der Klinik |
| 1936 | Die lustigen Weiber as Herr Fluth / Frank Ford |
| 1935 | Der mutige Seefahrer as Bäckermeister Holm |
| 1935 | Ein ganzer Kerl as Eckhardt |
| 1935 | Knockout – Ein junges Mädchen, ein junger Mann as Boxmanager Schmidtchen |
| 1934 | Liebe dumme Mama as Inspektor Beneke |
| 1934 | Der Herr der Welt as Wolter |
| 1934 | Die vertauschte Braut as Der Gefängnisdirektor |
| 1934 | Achtung! Wer kennt diese Frau? as Thomas Burger |
| 1934 | Der Flüchtling aus Chicago as Wolke, Werkmeister |
| 1933 | Der Tunnel as Bärmann |
| 1933 | S.A. Mann Brand as Herr Brand |
| 1933 | Dr. Mabuse'nin Vasiyeti as Kommissar Lohmann |
| 1933 | Die blonde Christl as Franz Lechner |
| 1932 | Die Zwei vom Südexpress as Karl, Lokomotivführer |
| 1932 | Die verkaufte Braut as Heiratsvermittler Kezal |
| 1932 | Die Nacht der Versuchung as Gesandter |
| 1932 | Peter Voss, der Millionendieb as Pitt |
| 1932 | Die nackte Wahrheit |
| 1932 | Stürme der Leidenschaft |
| 1931 | M - Bir Şehir Katilini Arıyor as Inspector Karl Lohmann |
| 1925 | Das Parfüm der Mrs. Worrington as Philipp Worrington |
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