The family and friends of convicted murderer Simon Gittany have marched into court for his sentencing hearing bearing placards proclaiming his innocence and comparing him to Lindy Chamberlain and Gordon Wood.

The silent protest was led by Gittany's girlfriend Rachelle Louise.

The family made no comment as they walked into the Darlinghurst Supreme Court complex in Sydney.

In November last year, Gittany, 40, was found guilty of murder by throwing his then fiancee, Lisa Harnum, 31, from the 15th floor of their luxury inner-city apartment block in 2011, in what the judge described as a "fit of rage".