Which Supreme Court Justice appeared in a Broadway play while in office?
While Ruth Bader Ginsburg did indeed grace a stage while on the Supreme Court, it was in an opera, not a Broadway play. She was known for her cameos in productions of the Washington National Opera, often in non-singing, walk-on roles that delighted audiences.
The distinction of being the first sitting Supreme Court Justice to appear in a Broadway play belongs to Ketanji Brown Jackson. She made a one-night-only cameo in the musical & Juliet, fulfilling a lifelong personal dream and making a surprising bit of history in the process.
Source:
https://www.youtube.com/watch?v=cDGzAkfsKj4
https://www.threads.com/@beliproduk.official/post/DOTS_BjEnof