If you own the series on physical media or a different platform and need to add subtitles manually, several databases host community-translated Swedish SRT files:
To get Swedish subtitles () for the 2016 series The Crown , your best bet is using the built-in settings on Netflix , as the show is a Netflix original. đź“ş How to Enable Subtitles on Netflix The Crown (2016) Svenska undertexter
If you prefer a physical copy, verify the region and subtitle support before buying. If you own the series on physical media