It technically isn't, but it's listed in a private-use area: https://en.wikipedia.org/wiki/Klingon_alphabets https://en.wikipedia.org/wiki/Klingon_alphabets An

It technically isn't, but it's listed in a private-use area: https://en.wikipedia.org/wiki/Klingon_alphabets https://en.wikipedia.org/wiki/Klingon_alphabets And, if you check the languages for the full Noto font Klingon is listed so it should work.