希爾斯郡（又譯山郡；英文：Hills Shire），舊稱寶琴山郡（英文：Baulkham Hills Shire），係澳大利亞位於雪梨西北地區嘅一個地方政府；郡轄境有386平方公里。山郡由於公園、生態保護區、農莊遍佈全境，因此素有「花園之郡」嘅美稱。2000年以後，由於市區週圍房價高漲，而當地居住環境怡人，因此吸引好多新家庭遷入。
Hills Shire, formerly known as Baulkham Hills Shire, is a local government in Australia in the northwest region of Yali, with a county area of 386 square kilometers. Because of its parks, ecological reserves, and farms, it is known as the "Garden County". Since 2000, many new families have moved in due to the high housing prices around the city and the pleasant living environment in the area.