Sir Pynsent Chernock, 3rd Baronet (before 1670 – 2 September 1734) was a Tory landowner and Member of Parliament from Bedfordshire. He became knight of the shire for the county in 1705 by a comfortable margin, but declined to contest it in the next election in 1708. Chernock subsequently sold one of his manors, perhaps to pay for his electioneering expenses. After a close election in 1713, his political career ended with a defeat in 1715.