Halle d'Arpajon, 15th-century market hall in Arpajon, France.

Halle d'Arpajon is a 15th-century market hall with a sandstone base and timber framing of oak and chestnut wood. The structure measures about 35 meters (115 feet) long, 18 meters (59 feet) wide, and 15 meters (49 feet) high, creating a spacious interior for local commerce.

Louis Malet de Graville, lord of the manor, had the hall built in 1470, around the same time as the hall at Milly-la-Forêt. The commune bought it from Philippe de Noailles in 1821. It was listed as a monument historique on 3 February 1921 and partially restored in 1951.

Since 1922 the hall has hosted a bean fair, replacing the cattle fair that was held here earlier. The building belongs to the municipality, which bought it in 1821 from Philippe de Noailles. The fair keeps the 35-metre timber nave in use as a market space.

The hall sits in Arpajon's market square, about 25 kilometers (15 miles) south of Paris, serving as a hub for local commerce. Visitors can easily explore the structure on foot and observe both its architectural details and the ongoing trading activities.

The wooden frame was carefully restored in 1951 using authentic techniques that revealed the craftsmanship of medieval builders. This restoration not only preserved the historical integrity but also allowed the building to remain fully operational for modern commercial use.