Arthur Hetherington Grimm (27 August 1868 – 20 March 1939) was an Australian politician.
He was born at Dalby in Queensland to Presbyterian minister George Grimm and Mary, née Hetherington. The family moved around due to his father's position as moderator of the New South Wales Presbyterian Church, with Grimm growing up in Young, Grenfell and Balmain. He attended Fort Street Public School and left at the age of sixteen to become a drover, shearer and farm hand. In 1891 he bought a property near Grenfell, but in 1895 he was declared bankrupt. He was discharged in 1896 and became a stock and station agent. On 27 June 1900 he married Jane Eliza Stinson, with whom he had five children. He was elected to Weddin Shire Council in 1906 and served as president in 1913. In 1913 he was elected to the New South Wales Legislative Assembly as the Liberal member for Ashburnham. He was briefly a minister without portfolio assisting the Minister for Agriculture from February to April 1920. In that year, with the introduction of proportional representation, Grimm was elected as one of the members for Murrumbidgee, serving until 1925. He died at Manly in 1939.
|New South Wales Legislative Assembly|
| Member for Ashburnham
| Member for Murrumbidgee
Served alongside: Buttenshaw, Flannery