Alcathous (disambiguation)
- Alcathous
 The son of Pelops and Hippodamia. He married the daughter of King Megareus of Megara and became his successor.
 In: Greek people
- Alcathous
 A son of Aesyetes and husband of Hippodamia, the daughter of Anchises and sister of Aeneas, who was educated in his house.
 In: Greek people
- Alcathous
 A son of Porthaon and Euryte, daughter of Hippodamas. He was killed by Tydeus.
 In: Greek people
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