AlphaElwedritsch Yes
https://grapheneos.org/install/
Ubuntu 24.04 is not currently listed as one of the supported OS releases for the GrapheneOS installer, which I imagine might be the reason why the OP is asking. https://grapheneos.org/install/web#prerequisites
Anais Hello, can we install grapheneos from Ubuntu 24.04?
Whilst it is not listed as one of the one of the supported OS versions, that's most likely because it has not been tested yet by the development team. That said, I am not currently aware of any reason why it would not work with Ubuntu 24.04. If you follow the instructions on the web installer you should be fine, and if you get stuck at all, you can always ask us for support.