Rorbas is a municipality in the district of Bülach in the canton of Zürich in Switzerland.

Rorbas has an area of 4.5 km2 (1.7 sq mi)—where 35.7% is used for agricultural purposes, 46.6% is forested and 15% is settled (buildings or roads).

Most of the population in 2000 spoke German (87.1%), with Italian the second most common (2.8%) and Portuguese third (1.8%).

There were 57 people employed in the primary economic sector in 11 businesses.

[3] Embrach-Rorbas railway station is served by Zurich S-Bahn line S41, linking the communities, Winterthur and Waldshut.