Arthur Robert Hinks, CBE, FRS (26 May 1873 – 14 April 1945) was a British astronomer and geographer.As an astronomer, he is best known for his work in determining the distance from the Sun to the Earth (the astronomical unit) from 1900–1909: for this achievement, he was awarded the Gold Medal of the Royal Astronomical Society and was elected a fellow of the Royal Society.
His later professional career was in surveying and cartography, an extension of his astronomical interests.