分隔主义（英文：Cloisonnism），是十九世纪末后印象派的绘画风格之一，使用轮廓明显、扁平的构图方式，且以黑色线条描边。该名词被评论家爱德华‧度加当（Édouard Dujardin）使用来指称于1888年3月在法国展出的独立沙龙（Salon des Indépendants）中的画作风格。著名艺术家有爱弥儿‧贝纳尔德（Émile Bernard）、路易‧安格丹（Louis Anquetin）、高更（Paul Gauguin）、保罗·塞律西埃（Paul Sérusier）。在艺术史的发展上，分隔主义和综合主义（Synthetism）有关连。

Cloisonnism is a style of post-Impressionist painting with bold and flat forms separated by dark contours. The term was coined by critic Edouard Dujardin on the occasion of the Salon des Indépendants, in March 1888. Artists Émile Bernard, Louis Anquetin, Paul Gauguin, Paul Sérusier, and others started painting in this style in the late 19th century. The name evokes the technique of cloisonné, where wires (cloisons or "compartments") are soldered to the body of the piece, filled with powdered glass, and then fired. Many of the same painters also described their works as Synthetism, a closely related movement.