Sir Alfred Jerome Cadman KCMG (17 June 1847 – 23 March 1905) was a New Zealand politician of the Liberal Party. He was the Minister of Railways from 1895 to 1899 in the Liberal Government.

Cadman was born in Sydney, Australia, in 1847. His family emigrated to Auckland in 1848.^[1]

He was the Member of Parliament for several electorates: Coromandel 1881–1890, Thames 1890–1893 (resigned), City of Auckland 1893, Waikato 1893–1896 and Ohinemuri 1896–1899, when he retired from the Lower House.^[2] He resigned and was re-elected in the 1893 by-election after a challenge to his personal integrity.

In 1899 he was then appointed to the Legislative Council, of which he was a member from 21 December 1899 until he died, and was Speaker from 7 July 1904 until he died.

He was appointed a Companion of the Order of St Michael and St George (CMG) in June 1901, on the occasion of the visit of TRH the Duke and Duchess of Cornwall and York (later King George V and Queen Mary) to New Zealand.^[3] In 1903 he was knighted and promoted to a Knight Commander within the Order of St Michael and St George (KCMG).

Cadman died in Auckland on 23 March 1905.^[1]