Alcide Le Beau (1873–1943) was a French painter whose work bridged late 19th-century academic traditions with early modernist innovations. Influenced by the Pont-Aven School, he embraced strong outlines, simplified forms, and vibrant color, while also incorporating elements of Divisionism and Post-Impressionism. His landscapes and coastal scenes reflect the Synthetist emphasis on flatness, decorative patterning, and emotional resonance.

Born in Lorient, Brittany, Le Beau began his studies in Paris in 1890 but drew much inspiration from the landscapes of Brittany, the Côte d’Azur, Corsica, and Sicily. Often painting alongside his companion Irène Reno, he explored light, atmosphere, and compositional rhythm. His vigorous yet controlled brushwork, coupled with a nuanced use of color, conveyed both vitality and mood, while his figurative and genre scenes maintained a balance between structure and expressive freedom.

Le Beau exhibited widely in Paris and regional salons, earning recognition for synthesizing modernist experimentation with a distinctly personal vision. Today, his works are valued for their vibrant palette, lyrical brushwork, and poetic portrayal of the natural world, securing his place among early twentieth-century French artists.