The Exposition Universelle of 1889, better known in English as the 1889 Paris Exposition, was a world's fair held in Paris, France, from 6 May to 31 October 1889. It was the fifth of ten major expositions held in the city between 1855 and 1937. It attracted more than thirty-two million visitors. The most famous structure created for the exposition, and still remaining, is the Eiffel Tower.

A world's fair, also known as a universal exhibition or an expo, is a large global exhibition designed to showcase the achievements of nations. These exhibitions vary in character and are held in different parts of the world at a specific site for a period of time, typically between three and six months.