The Study of Ancient Runes (commonly shortened to Ancient Runes) is an elective course at Hogwarts School of Witchcraft and Wizardry, that can be taken by students third year and above. It was taught by Professor Bathsheda Babbling during the 1990s at least[1], and is the study of runic scriptures, or Runology. Ancient Runes is a mostly theoretical subject that studies the ancient runic scripts of magic.
[Harry Potter Wiki]