The version containing Croatian subtitles is typically marketed as the or Central European release. It can be found on major retail platforms: Amazon (AU): Listed as Casanova (2005) Czech Version DVD .
Croatian, English, Czech, Estonian, Hebrew, Hungarian, Polish, Serbian, Slovenian Casanova subtitles Croatian
English 5.1, Czech 2.0, Hungarian 2.0, Polish 2.0, Russian 5.1 Acquisition Options Similar listings under the Czech Version label
Heath Ledger, Sienna Miller, Jeremy Irons, Charlie Cox Format: DVD (Region 2, PAL) Slovenian English 5.1
The primary search result for "Casanova subtitles Croatian" indicates that the , starring Heath Ledger and Sienna Miller, includes Croatian subtitles on several European DVD releases.
Similar listings under the Czech Version label.
Since these discs are PAL Region 2, you will need a multi-region DVD player or a compatible computer drive if you are located outside of Europe or Australia. Casanova (2005) DVD / Casanova (czech version) - Amazon