Athenais
Athenais or Athenaïs is a given name which may refer to:

Athenais (seer), 4th century BC prophetess who told Alexander the Great of his allegedly divine descent
Athenais Philostorgos I (fl. 1st century BC), Queen of Cappadocia
Athenais Philostorgos II (fl. 1st century BC), princess from the Kingdom of Pontus and through marriage a Roman client Queen of Cappadocia
Athenais of Media Atropatene (fl. 1st century BC), princess from the Kingdom of Commagene and wife of Artavasdes I of Media Atropatene 
Athenais (daughter of Herodes Atticus) (141-161), noblewoman who lived in the Roman Empire
Athenais (great-granddaughter of Herodes Atticus), Roman noblewoman who lived between the second half of the 2nd century and first half of the 3rd century
Aelia Eudocia (c. 401–460), birth name Athenais, wife of East Roman Emperor Theodosius II
Françoise-Athénaïs, marquise de Montespan (1641–1707), better known as Madame de Montespan, chief mistress of King Louis XIV of France