There is no confirmed public information about the specific person or people Jay‑Z had an affair with, only his own admission that he was unfaithful in his marriage to Beyoncé.

What Jay‑Z Has Admitted

  • Jay‑Z has openly said he cheated on Beyoncé, speaking about “infidelity” and how his emotional issues led him to push her away.
  • He discussed this in a 2017 interview and through the themes and lyrics on his album 4:44 , which many listeners understood as him addressing his own cheating.

Rumors About “Who” It Was

  • Over the years, fans and tabloids have speculated about various women, including fashion designer Rachel Roy, especially around the time of the infamous elevator incident with Solange in 2014, but none of this has been confirmed by the people involved.
  • Online discussions and gossip forums regularly repeat these names, but they remain unverified rumors rather than established facts.

Why There Is No Clear Answer

  • Neither Jay‑Z nor Beyoncé has publicly identified any specific person he cheated with, and their public focus has stayed on healing their relationship rather than naming third parties.
  • Without direct confirmation, any claim about “who Jay‑Z had an affair with” is speculative and should be treated purely as gossip, not as confirmed truth.

TL;DR: Jay‑Z has admitted to cheating on Beyoncé, but he has never publicly confirmed who it was with, and all specific names circulating online are unverified rumors.

Information gathered from public forums or data available on the internet and portrayed here.