David Carl Janetzki (born 28 June 1978) is an Australian politician.
He was elected to the Queensland Legislative Assembly representing the seat of Toowoomba South for the Liberal National Party at a Toowoomba South state by-election in July 2016.Janetzki was appointed Shadow Attorney-General and Shadow Minister for Justice by LNP Leader Deb Frecklington when she announced her opposition cabinet on 15 December 2017.