Sibiryak[a] (/sɪbɪərˈjæk/ sib-eer-YAK) was a passenger train which linked Berlin to some of main routes and cities of Russia.

The train passed through Germany, Poland, Belarus, Russia and Kazakhstan, partly traveling on the Trans-Siberian Railway.

With 5,130 km from Berlin to Novosibirsk it was the longest route of any that depart from a station within the European Union.

The total number of destinations was eight: Novosibirsk, St.Petersburg, Moscow, Kazan, Chelyabinsk, Ufa, Nur-Sultan (in Kazakhstan) and Adler, a city in the suburbs of Sochi.

From 2008 it periodically changed its Berliner route,[4] stopping again at Lichtenberg and ending at Gesundbrunnen station.