John Carey (died 4 July 1594) was martyred at Dorchester, Dorset, England, for adherence to the Roman Catholic faith.

John (or Terence) Carey was an Irish layman, born in Dublin, and servant of Thomas Bosgrave and was put to death with Thomas Bosgrave, John Cornelius (a priest, born of Irish parents in Bodmin in Cornwall), and Patrick Salmon, another lay helper also of Dublin birth, at Dorchester in Dorset in 1594.

The authorities hoped that by staging such spectacles the arrival of young, idealistic missionary priests (most of whom were English), inspired by the Counter-Reformation, would be brought to an end.

Their trial took place in the main hall of what is now Chideock House Hotel; they were condemned to death on 2 July 1594 and executed two days later.

The two lay helpers refused the offer of amnesty through the abjuration of their allegiance to Catholicism and conversion to the Protestant faith.