Werner Groiß (born 6 December 1967 in Gars am Kamp) is an Austrian politician who has been a Member of the National Council for the Austrian People's Party (ÖVP) from 2013 to 2017.

He also works as a Statutory auditor, Tax advisor and Entrepreneur.

Werner Groiß was a founding member and chairman of the young ÖVP Gars am Kamp between 1986 and 1988, and in 2000 he became the vice chairman of the ÖVP Gars am Kamp.

In 2013, Werner Groiß succeeded the outgoing Günter Stummvoll as National Councilor for the Waldviertel constituency.

In 2016, he succeeded Andreas Zakostelsky as finance spokesman for the ÖVP and chairman of parliamentary financial administration [1][2] Groiß ended his parliamentary career in December 2017.