The Swingjugend (Swing Youth) were a youth counterculture in Nazi Germany during the late 1930s and early 1940s, primarily active in cities like Hamburg and Berlin. The movement consisted of teenagers and young adults who expressed their opposition to the Nazi regime through an aesthetic and cultural rebellion. Their defiance was centered on an affinity for American and British swing and jazz music, and the adoption of a distinct, Anglo-American fashion style.

While largely apolitical in their initial aims, the Swingjugend's celebration of individualism, personal freedom, and "degenerate" foreign music was a direct affront to the Nazi ideals of militarism, nationalism, and uniformity. Their very existence was perceived as a political threat, leading to brutal persecution by the Gestapo.

The Swing Youth emerged in the late 1930s as loose circles of friends who gathered in private homes and clubs to listen and dance to forbidden jazz records. Their open admiration for enemy cultures, ironic use of greetings like "Swing Heil!", and frequent clashes with the Hitler Youth brought them to the attention of the Nazi authorities.

The regime's response escalated throughout the war. The youth were harassed, their dances were raided, and their non-conformity was labeled as "moral depravity." In 1942, SS leader Heinrich Himmler gave a direct order to crush the movement, demanding that its leaders be imprisoned in concentration camps for several years. This led to mass arrests, and many Swing Youth were tortured or deported to camps like Moringen, Uckermark, and Ravensbrück for their cultural and aesthetic dissent.

The Swingjugend adopted a distinct fashion style that was intentionally Anglo-American and rejected the rigid norms of the Nazi regime. According to a 1940 police report, the look for boys included long, often checked sports jackets, shoes with thick crepe soles, showy scarves, and often an umbrella, carried regardless of the weather. They grew their hair long, which directly defied the military short-back-and-sides haircut of the Hitler Youth.

Girls in the movement rejected the "natural" look promoted by the League of German Girls, which favored braided hair and no makeup. Instead, they wore their hair long and loose, applied lipstick and nail polish, and penciled their eyebrows. Their choice to wear makeup and embrace a more glamorous, feminine style was, in the context of the Third Reich, an act of cultural defiance and rebellion. A similar subculture with a parallel aesthetic, known as the Zazous , existed in occupied France.

For the Swing Youth, swing and jazz music symbolized everything the Nazi regime opposed: individual freedom, self-determination, internationalism, and a love of life. Their rebellion was not based on organized political action, but on creating an "alternative inner world"—a form of escapism centered on jazz that stood in contrast to the grim reality of wartime Germany. They cultivated a "laissez-faire" attitude and a "cool, laid-back demeanor" modeled after American and British film stars, directly challenging the Nazi ideal of the spartan, obedient soldier.