Tiller[2] or Tillerbyen[3] is a neighborhood in the borough of Heimdal in the city of Trondheim, Norway.

It is located in the southwestern part of Trondheim Municipality in Trøndelag county.

The European route E6 highway passes through Tiller from north to south, connecting Trondheim with Melhus.

Tiller has large commercial areas including shopping centers and around 300 businesses, especially in Tillerbyen.

Among the shopping centers in this area, City Syd is the best known.