Indo-European:
* Sanskrit: Ancient language of India, used in Hinduism, Buddhism, and Jainism. Influenced many languages in South and Southeast Asia.
* Latin: Language of the Roman Empire, still used in some contexts like scientific nomenclature and some legal terms.
* Ancient Greek: Language of ancient Greece, used in philosophy, literature, and science. Influenced many European languages.
* Old Church Slavonic: The liturgical language of Eastern Orthodox Christianity. Used to translate the Bible and religious texts.
* Avestan: The sacred language of Zoroastrianism.
* Gothic: An extinct Germanic language documented in the Bible translation by Ulfilas.
Semitic:
* Hebrew: The language of the Hebrew Bible and the modern state of Israel.
* Akkadian: The language of the Akkadian Empire, known for its cuneiform writing system.
* Aramaic: An ancient language spoken by Jesus and used in the Bible.
Other:
* Ancient Egyptian: The language of ancient Egypt, written in hieroglyphs.
* Ancient Chinese: The language of ancient China, with various dialects and writing systems.
* Classical Maya: The language of the ancient Maya civilization.
* Etruscan: The language of the Etruscan civilization in ancient Italy.
It's important to note that there are many other languages that could be considered "classical," depending on the criteria used.
For example, some might argue that Classical Arabic (the language of the Quran) or Middle Persian (the language of the Sassanid Empire) should be included in the list.
Ultimately, the designation of a language as "classical" is often subjective and depends on its historical significance, cultural influence, and the extent to which it is still studied and used in modern times.