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 .
Similar listings under the Czech Version label. Casanova subtitles Croatian
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 Casanova subtitles Croatian