| Year: | 1930 |
| L'Exposition Internationale de Liège 1930 | |
| Visitors: | 6 million |
| Cnt: | 20 |
| Country: | Belgium |
| City: | Liège |
| Venue: | Droixhe |
| Coord: | 50.6489°N 5.6257°W |
| Award: | 1926 |
| Suppl: | Universal Expositions |
| Prevsuppl: | Ibero-American Exposition of 1929 in Sevilla and1929 Barcelona International Exposition |
| Prevsupcity: | Barcelona |
| Nextsuppl: | Century of Progress |
| Nextsupcity: | Chicago |
The Liège International Exposition (French: Exposition Internationale de Liège) was a world's fair held in Liège, Belgium, between 3 May and 3 November 1930. The fair marked the centenary of Belgian Independence. The Liège exposition was one of two simultaneous fairs: one in Liège focused on industry and science from 1830 to 1930 and one in Antwerp concerned with colonial and maritime themes.
The two expositions are the more specialised type of world's fairs that Belgium hosted in addition to its hosting of 6 larger expositions. The official name for the Liège exposition was the French: Exposition internationale de la grande industrie, sciences et applications, art wallon ancien ("International Exposition of Large Industry, Sciences and Applications, Art of Old Wallonia"), though it is also known retroactively as the French: Exposition Internationale de Liège ("Liège International Exposition").
In addition to exhibits on science and technology, the exposition included a retrospective on Walloon art and an amusement park. The exposition took place at two locations. The Parc de Boverie, which had hosted the 1905 exposition was renovated. A military maneuver ground north of town became the residential area of Droixhe. The exposition also served as an incentive to complete flood control work around Liège that had been delayed by the First World War. The Pont-barrage de Monsin was built at this time.
The exhibition was not considered a great success. Attracting six million visitors, the organisers had anticipated ten to twelve million. Attendance was cut by the economy, bad weather and public indifference. The exhibition resulted in a modest fiscal loss for the organisers and the city. Vestiges of the exposition included a new airport and train station, control of the Meuse, the commencement of the Albert Canal and the Pont de Coronmeuse, as well as reconstruction of places damaged during the war.