Sir John Acland, 1st Baronet (c. 1591 – 24 August 1647) of Acland in the parish of Landkey and of Columb John in Devon, England, was a Royalist commander in the Civil War, during the early part of which he maintained a garrison for the king on his estate of Columb John. He was created a baronet in 1644 for his support, but the letters patent were lost or never finalised and the dignity was not confirmed until 1677/8, long after his death. He compounded with Parliament for his estate in 1646 and died the following year.