John Parkins was an English merchant and politician who sat in the House of Commons from 1621 to 1622.
Parkins was the son of William Parkins of Dorchester He became a merchant in the town.
On 1 October 1619 he became bailiff of Dorchester for the third time. He became bailiff again on 4 October 1624. On 10 July 1625 a ship Francis Sandars was taken by French pirates and as a result Parkins lost kerses to the cost of £700.
On 6 October 1629 King Charles granted Dorchester a new charter and Parkins became first mayor under this charter.
Parkins died at the age of about 69.
In 1621, he was elected Member of Parliament for Dorchester.