Captain Fergus MacCunn (19 April 1890 – 18 May 1941) was a British animal welfare activist and chief secretary of the RSPCA.

[2] E. Douglas Hume commented that "a bullet through the head put an end to his soldiering".

[5] In February 1926, MacCunn lectured at Birkbeck College where he requested to form a new animal welfare society.

[6] His lecture was influential to C. W. Hume who founded the University of London Animal Welfare Society.

[1] He was an honorary member of the Massachusetts Society for the Prevention of Cruelty to Animals.