Büchslen (French: Buchillon) is a former municipality in the district of See in the Canton of Fribourg in Switzerland . On 1 January 2013 the former municipality of Büchslen merged into the municipality of Morat.

Büchslen is first mentioned in 1339 as Buchillion. Until the 18th century it was known as Bichslen.

Before the merger, Büchslen had a total area of 1.6 km2 (0.62 sq mi). Of this area, 1.26 km2 (0.49 sq mi) or 81.3% is used for agricultural purposes, while 0.21 km2 (0.081 sq mi) or 13.5% is forested.