Gampelen (French: Champion) is a municipality in the Seeland administrative district in the Canton of Bern in Switzerland. Gampelen should not be confused with the municipality Gampel in the canton of Valais.

Gampelen is first mentioned in 1179 as Champion and again in 1228 as Champlun.

The area around Gampelen was home to several mesolithic, neolithic and Bronze Age settlements. One of the largest was a Late Bronze Age lake front settlement on Witzwil Island. Bricks, money and a dam from Roman era settlements have been found stretching from Zihlbrücke in Gals through Gampelen to Witzwil in Ins.