Red Dragon (German: Das Geheimnis der drei Dschunken, lit. 'The Secret of the Three Junks', Italian: A-009 missione Hong Kong) is a 1965 West German-Italian spy film directed by Ernst Hofbauer and starring Stewart Granger, Rosanna Schiaffino, and Margit Saad. It was released in Germany as Das Geheimnis der drei Dschunken and A 009 missione Hong Kong in Italy. It was released in the United States as a double feature with Lightning Bolt by Woolner Brothers in 1967 under the title Code Name Alpha.The film's sets were designed by the art director Max Mellin. It was shot on location in Hong Kong.

The film is based on the 1952 novel Les Gentlemen de Hong Kong by Georges Godefroy that was made as the French spy film The River of Three Junks (1957) set in Saigon.