豪勋爵岛（Lord Howe Island）是位于澳洲东部塔斯曼海中的一座岛屿，隶属于澳大利亚的新南威尔斯州，距澳洲本土约600公里，面积14.6平方公里，最高处为海拔875公尺的高尔山（Mt. Gower）。常住人口约350人，通常还有约400人的观光客。

豪勋爵岛是由海底2000多公尺深的火山运动与喷发而形成，岛上有许多的特有物种，尤以鸟类为最。1982年豪勋爵岛与周围小岛被联合国教育科学文化组织选为世界自然遗产。

豪勋爵岛于1788年2月17日由亨利·利居柏德·柏尔（Henry Lidgbird Ball）所领导的英国皇家海军发现，以对法国作战有功的理乍得·豪（Richard Howe，「Howe」姓也有译为「何奥」者）勋爵命名。

Lord Howe Island (/ˈhaʊ/, local /ˈhæɔː/; formerly Lord Howe's Island) is an irregularly crescent-shaped volcanic remnant in the Tasman Sea between Australia and New Zealand, 600 kilometres (370 mi) directly east of mainland Port Macquarie, and about 900 kilometres (560 mi) south-west of Norfolk Island. It is about 10 km long and between 2.0 km and 0.3 km wide with an area of 14.55 km, though just 3.98 km of that comprises the low-lying developed part of the island. Along the west coast there is a sandy semi-enclosed sheltered coral reef lagoon. Most of the population lives in the north, while the south is dominated by forested hills rising to the highest point on the island, Mount Gower (875 m or 2,871 ft). The Lord Howe Island Group comprises 28 islands, islets and rocks. Apart from Lord Howe Island itself the most notable of these is the volcanic and uninhabited Ball's Pyramid about 23 kilometres (14 mi) to the south-east of Howe. To the north lies the Admiralty Group, a cluster of seven small uninhabited islands.