Hugh Francis Clarke Cleghorn (9 August 1820 – 16 May 1895) was a Madras-born Scottish physician, botanist, forester and land owner. Sometimes known as the father of scientific forestry in India, he was the first Conservator of Forests for the Madras Presidency, and twice acted as Inspector General of Forests for India. After a career spent in India Cleghorn returned to Scotland in 1868, where he was involved in the first ever International Forestry Exhibition, advised the India Office on the training of forest officers, and contributed to the establishment of lectureships in botany at the University of St Andrews and in forestry at the University of Edinburgh. The plant genus Cleghornia was named after him by Robert Wight.