There is one Australian feature film which is claimed by its director to be in the giallo genre, but it has never had a general release, so I've not been able to see it.
Sororal (Sam Barrett, 2015) Amanda Woodhams, Liam Graham, James Helm, Vito de Francesco, Nicola Bartlett; giallo thriller; Perth WA; screened 2 April 2014 Monster Fest Australia
There's an Italian film which was partly shot in Australia which qualifies. The word 'giallo' was added to the Italian title to make the connexion with the genre: the dead girl was not actually wearing yellow pyjamas.
Garry Gillard | New: 14 November, 2016 | Now: 14 March, 2017