De Chair or de Chair is a surname, and may refer to:
Dudley de Chair (1864–1958), British admiral and Governor of New South Wales Enid de Chair (1879–1966), First Lady of New South Wales, art patron and artist Somerset de Chair (1911–1995), English author, politician and poet Helena Rees-Mogg ( de Chair, born 1977), television personality and daughter of Somerset de Chair