Balm bei Messen was a municipality in the district of Bucheggberg in the Canton of Solothurn in Switzerland. On 1 January 2010 the municipalities of Balm bei Messen, Brunnenthal and Oberramsern merged into the municipality of Messen.

Balm bei Messen was first mentioned in 1254 as de Balmo. In 1275 it was mentioned as in Balm.

Balm bei Messen has an area, as of 2009, of 2.18 square kilometers (0.84 sq mi). Of this area, 1.3 km2 (0.50 sq mi) or 59.6% is used for agricultural purposes, while 0.7 km2 (0.27 sq mi) or 32.1% is forested.