Concetto Antonio "Con" Sciacca AO (born 13 June 1947), Australian politician, was an Australian Labor Party member of the Australian House of Representatives from July 1987 to March 1996 and again from October 1998 to October 2004, representing the Division of Bowman, Queensland. He was born in Sicily, Italy, and was a solicitor and bank officer before entering politics.

Sciacca was Parliamentary Secretary to the Minister for Social Security from 1990-94. Parliamentary Secretary to the Minister for Arts and Administrative Services 1993-94, Parliamentary Secretary to the Minister for Administrative Services 1994, Minister for Veterans' Affairs 1994-96 and Minister Assisting the Treasurer for Superannuation 1995-96.

After his re-election in 1998, Sciacca was a member of the Opposition Shadow Ministry 1998-2001. Sciacca contested the new Division of Bonner at the 2004 election, but was narrowly defeated by Liberal candidate Ross Vasta.