Wildberg is a municipality in the district of Pfäffikon in the canton of Zürich in Switzerland.

Of the rest of the land, 6.7% is settled (buildings or roads) and the remainder (1.7%) is non-productive (rivers, glaciers or mountains).

As of 2007[update] 3% of the total municipal area was undergoing some type of construction.

Most of the population (as of 2000[update]) speaks German (97.1%), with French being second most common ( 0.6%) and Dutch being third ( 0.6%).

In the 2007 election the most popular party was the SVP which received 54.8% of the vote.