Effretikon is a railway station in the Swiss canton of Zürich and municipality of Illnau-Effretikon. The station, which takes its name from the village of Effretikon, is located on the Zürich to Winterthur main line at the junction point with the Effretikon to Hinwil line.

Illnau-Effretikon is a municipality in the district of Pfäffikon in the canton of Zürich in Switzerland. It includes the villages of Illnau, Effretikon, Ottikon and Bisikon. On 1 January 2016 Kyburg and Illnau-Effretikon merged to form the municipality of Illnau-Effretikon.