Cônjuge: Mark Bailey (desde 1999)
Filhos: Bridget Katherine Kennedy-Bailey, Georgia Elizabeth Kennedy-Bailey, Zachary Corkland Kennedy-Bailey
Irmãos: Robert F. Kennedy, Jr., Kerry Kennedy, David Kennedy, Michael LeMoyne Kennedy, Joseph P. Kennedy II, Christopher G. Kennedy, Kathleen Kennedy Townsend, Courtney Kennedy Hill, Max Kennedy, Douglas Harriman Kennedy
Pais: Ethel Kennedy, Robert F. Kennedy