John Forbes (c.1568–1634) was a Scottish minister exiled by James VI and I.
John Forbes was born around 1568, probably at his father's main residence, Corse Castle, and was educated at the University of St. Andrews, where he earned the degree of M.A. in 1583, and was ordained minister of Alford, Aberdeenshire in 1593. When the proceedings of the synods of Aberdeen and Moray against George Gordon, 1st Marquess of Huntly were interfered with by the privy council, he was sent by them to London to seek redress from the king, James I. He went to court in March 1605, was graciously received by the king, and succeeded in the object of his mission.
In July 1605 he was appointed moderator of the Aberdeen assembly, which was held contrary to the king's orders; and when he and others were summoned before the privy council to answer for their disobedience, they declined its jurisdiction, as the matter was spiritual, and offered to submit their conduct to the judgment of the church. For this Forbes and five others were imprisoned in Blackness Castle (the so-called "warded minsters", who included also John Welsh of Ayr, and other participants in the assembly, namely Andrew Duncan, Robert Dury, John Sharp, and Alexander Strachan.). They were tried for high treason, found guilty by a packed jury, and banished from the king's dominions for life.
The exiles sailed from Leith for Bordeaux on 7 November 1606. On reaching France Forbes visited James Boyd of Trochrig at Saumur Academy, and then went to the Academy of Sedan. For some years he travelled, visiting the reformed churches and universities. In 1611 he was settled as pastor of a British congregation at Middelburg. He was offered release from banishment on conditions which he could not accept. In 1616 he was in London for several months, and saw the king, who promised to revoke his sentence of exile, but the promise was not fulfilled.