Mount Osmond is a small suburb of 2,497 people in the South Australian capital city of Adelaide. It is part of the City of Burnside local government area and located in the foothills of the Adelaide Hills, five kilometres south east of the city centre. The suburb is high on the hill of the same name, which is the last hill on the right when approaching Adelaide down the South Eastern Freeway before the road levels out onto the Adelaide Plains. It is bounded to the north by the suburb of Beaumont, to the north-east by Burnside, to the east by Waterfall Gully, to the south by Leawood Gardens/Eagle On The Hill, to the south-west by Urrbrae, to the west by Glen Osmond and to the north-west by St Georges.

Due to the suburb’s relative isolation and hilly geography, it contains very few roads and does not conform to Adelaide’s typical grid pattern – despite the suburb’s age. The earliest road to be built was Mount Osmond Road, and done so by early developers in 1882 to make the suburb more attractive to prospective buyers. Mount Osmond Road remains one of two sealed roads which can today access Mount Osmond and is located to the south of the suburb. It begins as the first interchange on the South Eastern Freeway (formerly Mount Barker Road) and then winds around the Mount to the top of the mount and around the golf course. The other sealed road that provides access to Mount Osmond is Hayward Drive, which starts in Beaumont and then winds around the hills to meet the rest of the suburb’s road network.