John Leechman (2 September 1803 – 16 March 1874) was a Baptist missionary and educator who worked in India at Serampore.
After the death of William Carey, he became a co-pastor with John Mack and Joshua Marshman.
He taught logic at the Serampore college and wrote a treatise on the 'Science and Art of Reasoning'.
He succeeded his father-in-law George Barclay as pastor at Irvine (Ayrshire) from 1839, serving later at Hammersmith (London) and Bath.
[1] The Leechmans on return to Britain were involved in resolving conflicts between the Serampore mission and the home committee.