In Greek mythology, the Minyans or Minyae (Greek: Μινύες, Minyes) were a group of legendary people who were the inhabitants of the city Orchomenus in Boeotia, and who were also associated with Thessaly. They were named after their eponymous ancestor, Minyas.

In archaeology, the term "Minyans" has been applied to the Minyan ware excavated from Orchomenus, and is used to refer to an autochthonous group of Proto-Greek speakers inhabiting the Aegean region, though the degree to which the material culture in the prehistory of the area can be securely linked to the legendary people or language-based ethnicity has been subjected to debate and repeated revision.

John L. Caskey's interpretation of his archaeological excavations conducted in the 1950s linked the ethno-linguistic "Proto-Greeks" to the bearers of the Minyan (or Middle Helladic) culture. More recent scholars have questioned or amended his dating and doubted the linking of material culture to linguistic ethnicity.

Greeks did not always clearly distinguish the Minyans from the Pelasgian cultures that had preceded them. Greek mythographers gave the Minyans an eponymous founder, Minyas, perhaps as legendary as Pelasgus (the founding father of the Pelasgians), which was a broader category of pre-Greek Aegean peoples. These Minyans were associated with Boeotian Orchomenus, as when Pausanias relates that "Teos used to be inhabited by Minyans of Orchomenus, who came to it with Athamas" and may have represented a ruling dynasty or a tribe later located in Boeotia.

Herodotus asserts several times that Pelasgians dwelt in the distant past with the Athenians in Attica, and that those Pelasgians driven from Attica in turn drove the Minyans out of Lemnos. The same historian also states that Minyans from Amyklai settled on the island of Thera in 800 BC.

Heracles, the hero whose exploits always celebrate the new Olympian order over the old traditions, came to Thebes, one of the ancient Mycenaean cities of Greece, and found that the Greeks were paying tribute of 100 cattle (a hecatomb) each year to Erginus, king of the Minyans. Heracles attacked a group of emissaries from the Minyans, and cut off their ears, noses, and hands. He then tied them around their necks and told them to take those for tribute to Erginus. Erginus made war on Thebes, but Heracles defeated the Minyans with his fellow Thebans after arming them with weapons that had been dedicated in temples. Erginus was killed and the Minyans were forced to pay double the previous tribute to the Thebans. Heracles was also credited with the burning of the palace at Orchomenus: "Then appearing unawares before the city of the Orchomenians and slipping in at their gates he burned the palace of the Minyans and razed the city to the ground."

The Argonauts were sometimes referred to as "Minyans" because Jason's mother came from that line, and several of his cousins joined in the adventure.

Before World War II, archaeologists sometimes applied the term "Minyans" differently, to indicate the very first wave of Proto-Greek speakers in the 2nd millennium BCE, among the early Bronze Age cultures sometimes identified with the beginning of Middle Helladic culture. Gray "Minyan ware" is an archaeologist's term for a particular style of Aegean pottery associated with the Middle Helladic period (ca. 2100–1550 BC). More recently, however, archaeologists and palaeontologists find the term "Minyan" to be questionable: "To call the makers of Minyan ware themselves 'Minyans' is reprehensible", remarked F. H. Stubbings. "Deriving ethnic names from pottery styles is one of the most deplorable habits in archaeology," F. J. Tritsch asserted in 1974. "We cheerfully speak of the 'Minyans' when we mean a population that uses pottery we call 'Minyan'," although he was mistaken in saying that the Greeks themselves never mention the 'Minyans' as a tribe or as a people.