
In COLOR Gaiety! A prince has a romance with a barmaid before he must give up personal happiness for duty.
Does The Student Prince have end credit scenes?
No!
The Student Prince does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of The Student Prince, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Edmund Gwenn
Prof. Juttner

Louis Calhern
King of Karlsberg

S.Z. Sakall
Joseph Ruder

John Williams
Lutz

Richard Anderson
Lucas

Edmund Purdom
Prince Karl Franz

John Ericson
Count Von Asterburg

Evelyn Varden
Queen

John Hoyt
Prime Minister

Ann Blyth
Kathie Ruder

Mario Lanza
Prince Karl (singing voice)

Steve Rowland
Feuerwald

Betta St. John
Princess Johanna
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Challenge your knowledge of The Student Prince with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
Which princess is Prince Karl Franz originally expected to marry?
Princess Kathie
Princess Johanna
Princess Mathilda
Princess Lutz
Show hint
Read the complete plot summary of The Student Prince, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
At the royal palace in Karlsburg, King Ferdinand counsels his grandson Prince Karl Franz on the near certainty of an engagement to the wealthy Princess Johanna of Nordhausen, noting that their country may be poor but has endured because royal marriages have always carried the crown’s weight. The following evening, a ball for Johanna hints that she finds Karl’s formal, reserved manner hard to warm up to, setting the stage for a quiet clash between duty and affection.
The mood at home grows more pressing as Queen Mathilda and the king discuss the shaky alliance. Mathilda urges Karl to shed his chill and discover warmth and charm, even if it isn’t his instinct. To steer him toward this softer side, the royal household summons Prof. Juttner, Karl’s tutor, who argues that real grace comes from living among people rather than from cursory lessons. He suggests a bold plan: Karl should be sent to Heidelberg, his alma mater, to immerse himself in ordinary life, while Juttner and the diligent royal valet, Lutz, accompany him.
In Heidelberg, the trio take rooms at an inn run by Joseph Ruder. Karl is immediately drawn to Ruder’s bright niece, Kathie, but their first encounter is imperfect—Karl’s impulse to kiss her is rebuffed, and Kathie’s initial resistance foreshadows the friction that may follow. As classes begin, Karl bristles at being treated like any other student until Juttner and Kathie gently correct his assumptions, and Karl starts to see the appeal of student life.
On Kathie’s advice, Karl joins the Westphalians, a friendly corps of fellow students, and discovers he enjoys the camaraderie and the simple pleasures of university culture, including the hearty drinking sessions that come with it. Yet when he tries again to kiss Kathie one evening, she knocks him back, and Lutz quietly warns Ruder that exposing Kathie to Karl’s princely world could lead to trouble if his identity were revealed. Kathie loses her job at a restaurant after Karl’s unwitting misstep, prompting Karl to humble himself, beg Kathie to return, and confess his growing love for her. The couple reconciles, and they return to Ruder’s inn as a united pair.
The relationship faces another test when Karl’s true identity is exposed during a late-night gathering with the Westphalians. Count Von Asterburg, the aloof head of the Saxo-Borussian corps, confronts Karl and challenges him to join their elite circle. Karl refuses to abandon his Westphalian friends, and the duel that ensues ends with Karl besting Von Asterburg in a sword fight. The duel ends with a handshake between the two men, yet Kathie remains distressed by the fraternal respect that has formed on the other side and by the rift it creates with her world.
A period of reconciliation follows, and a carnival night offers Karl a chance to escape with Kathie. But Prime Minister Von Mark arrives with grave news: the king is ill and wishes to see Karl. Karl returns to Karlsburg, promising Kathie that he will come back after attending to his duties, only to face a harsher reality—the king’s illness deepens, and the inevitable death soon follows. The monarch’s passing reshapes Karl’s sense of duty, and the prince agrees to proceed with the marriage to Johanna, even as he wrestles with his true feelings for Kathie.
Traveling toward Nordhausen for the royal wedding, Karl makes a final, poignant decision: he orders the train to halt in Heidelberg so he can bid Kathie farewell at Ruder’s inn. The heart-wrenching goodbye marks the moment when Karl must choose between the obligations of a throne and the life he might have with Kathie, a choice that will shape the future of Karlsburg.
In the end, the story unfolds as a careful examination of duty, identity, and personal happiness, following a prince who learns that leadership often means balancing public responsibilities with private desires, and that the path to real warmth may lie outside the palace walls.
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