What was the name of Aaron's wife?

Answer: Elisheba

Aaron married Elisheba, daughter of Amminadab and sister of Nahshon; she bore Nadab, Abihu, Eleazar and Ithamar.

“And Aaron married Elisheba, the daughter of Amminadab and sister of Nahshon, and she bore him Nadab and Abihu, Eleazar and Ithamar.”— Exodus 6:23 (BSB)