Thomas Erndl is a German politician of the Christian Social Union (CSU) who has been serving as a member of the Bundestag since 2017. He is the Deputy Chairman of the Foreign Affairs Committee and a member of the Defense Committee. Mr Erndl is also the Spokesman for International Polics and Security of the CSU Party in the Bundestag..

Erndl has been a member of the CSU since 1991 and engaged in local politics since 1993. In the 2017 German federal election, he stood successfully for election to the Bundestag, representing the Deggendorf electoral district (Wahlkreis 227) in Lower Bavaria. He won 41.1% of the first preference votes.

In parliament, Erndl has been a member in the Committee on Foreign Affairs (since 2018) and the Subcommittee on International Climate and Energy Policy (since 2022).From 2018 to 2021, he chaired the Subcommittee on Foreign Cultural and Educational Policy. In addition to his work in parliament, Erndl serves as deputy president of the Reservist Association of Deutsche Bundeswehr.