Richard Thomas Ball (14 September 1857 – 30 October 1937) was a politician and engineer in New South Wales, Australia.

He was born in Sydney to farmer George Ball and Ann, née Hooper. After attending primary school at Eastern Creek, he worked for several engineering companies and as a blacksmith.^[1] In 1880 he was charged with attempting to bribe Henry Parkes, the Colonial Secretary, asking for employment and offering a bonus of £50.^[2] He pleaded guilty and was not convicted on entering his own recognisance of £80 to appear when called upon.^[3]

He purchased Burn and Sons foundry at Goulburn in 1881. He established his own company in 1885, but was bankrupted in 1894. Ball served on Goulburn Council from 1887 to 1894, and was mayor from 1890 to 1891.^[1][4] After being discharged from bankruptcy he moved to Albury to be involved in the building of the waterworks. In 1898 he moved to Sydney, practising as a mechanical engineer.^[1]

Ball was elected to the New South Wales Legislative Assembly as the representative for Albury in 1895 as a Free Trade member.^[5] He was defeated in 1898 by 39 votes (2.4%),^[6] largely due to his opposition to elements of the federation proposal.^[1]

In 1904, Ball returned to the Legislative Assembly as the member for Corowa, initially as a Liberal Reform member, switching to the Farmers and Settlers party in 1913 before joining William Holman's grand coalition^[7] which coalesced into the Nationalist Party in 1917. He served until the introduction of proportional representation in 1920.^[8] Albury was merged into Murray and Ball was elected one of three members.^[9] After single-member districts were re-introduced in 1927 he returned to his old seat of Corowa,^[8] He was a supporter of the Riverina new state movement. He joined the United Australia Party in 1931 but the following year he defected to its coalition partner, the Country Party.^[1] There were 2 Country Party candidates for the 1932 election for Corowa and Ball retained the seat by just 1 vote after 72% of Lang Labor preferences went to the other Country Party candidate.^[8]

In November 1916 Ball was appointed Secretary for Public Works and Minister for Railways in the second Holman ministry. He was briefly Minister for Agriculture in the second Fuller ministry from April to June 1922 before resuming his old position as Secretary for Public Works, Minister for Railways and assuming additional responsibilities for State Industrial Enterprises and Housing, in which he served until the government's defeat in 1925. He was responsible for passing through Parliament the Act authorising the construction of the Sydney Harbour Bridge, and signed the contract for its erection.^[10] In 1927 he was appointed Minister for Lands in the Bavin ministry.^[5]

On 6 May 1880 Ball married Esther Arnold, with whom he had four children.^[5] Ester died on 27 August 1920 (aged 63).^[11] On 26 January 1926 he had married Lillie May Hume.^[5]

Ball died at Marrickville on 30 October 1937(1937-10-30) (aged 80).^[5][10]