Abraham 'Abram' Fitzgibbon (23 January 1823 – 4 April 1887) was an Irish-born railroad engineer and a pioneer for narrow-gauge railways.

In the early 1860s, Fitzgibbon was working at Dun Mountain Railway in Nelson, New Zealand, a horse-drawn line upon which he worked from 1860 (3 ft / 914 mm gauge) Fitzgibbon arrived in the colony of Queensland in June 1863.

[8] Despite opposition from contemporaries, he successfully advocated for the use of narrow gauge or 3 ft 6 in (1,067 mm) track in Australia.

[12][13][14] Fitzgibbon died on 4 April 1887 at Moorside, Bushey Heath, Hertfordshire, England.

[16][17] Queensland railways continue to be 1,067 mm (3 ft 6 in) gauge to the present day.