Trüllikon is a municipality in the district of Andelfingen in the canton of Zürich in Switzerland.

Of this area, 63.1% is used for agricultural purposes, 29.4% is forested, 7.3% is settled (buildings or roads), and the remainder (0.2%) is non-productive (rivers, glaciers or mountains).

Most of the population (as of 2000[update]) speaks German (94.6%), with Italian being second most common ( 0.7%) and Serbo-Croatian being third ( 0.6%).

In the 2007 election the most popular party was the SVP which received 52% of the vote.

In Trüllikon about 79.8% of the population (between age 25-64) have completed either non-mandatory upper secondary education or additional higher education (either university or a Fachhochschule).