Dynnyrne /ˈdinɜːrn/ is a suburb of Hobart, Tasmania, with views over the Derwent River that is largely situated on a hill south-west of the city above the Southern Outlet, and the suburb of Sandy Bay. The suburb border stretches from the Fitzroy Gardens in the north, to the University of Tasmania apartments in the south, and up the Waterworks Valley to the west. Other nearby suburbs are South Hobart and Tolmans Hill. Dynnyrne is Tasmania's second most affluent suburb according to documents released by the Australian Taxation Office.
The suburb is named for Dynnyrne House in South Hobart, which was built by Robert William Murray (1777–1850) who claimed to be descended from Sir William Murray, 1st baronet of Dunearn in Scotland.
Members of the public had been invited to suggest names for the suburb in 1940. About eighty different suggestions were received and six of them were forwarded to the Post Office for consideration. Cooloola, Illawarra, Karinga, Telopea, Rosslyn and Pambula were all rejected on the basis that they exactly or closely duplicated names already used in Australia. Following further consultation with the Post Office, Dynnyrne was chosen, recalling the first house built in the area about one hundred years earlier. One of the Hobart City Council aldermen warned that people would have difficulty knowing how to spell Dynnyrne but the new name was adopted.