A new and distinct cultivar of Begonia plant named `Leonie`, characterized by its compact and upright plant habit; double red-colored flowers with pale yellow centers that are held above the foliage; and excellent postproduction longevity.

Um cultivar novo e distinto da planta do begonia nomeou o ` Leonie`, caracterizado por seu hábito de planta compacto e ereto; o dobro vermelho-coloriu flores com centros amarelos pálidos que são prendidos acima do foliage; e longevity excelente do postproduction.