John Henry Coyne (16 January 1865 – 12 June 1926) was an Australian politician who served as a Member of the Queensland Legislative Assembly for the Electoral district of Warrego from 1908 until 1923.

He then married Mary Elizabeth Gordon (née Heath), a widow and had six children with her.

[7] On 7 June 1926, Harry Coyne was the passenger in a taxi that hit an electric light pole outside the Excelsior Hotel in Flinders Street, Townsville; he was found lying in the street unconscious and was taken by ambulance to hospital where he was found to have a fractured skull.

[8][9] Without having recovered consciousness, Harry Coyne died on 12 June 1926 surrounded by his family.

[2][10] Harry Coyne was accorded the honour of a state funeral which was held at St Andrew's Presbyterian Church on the corner of Ann Street and Edward Street, Brisbane, on 16 June 1926, after which he was buried in Toowong Cemetery.