Cape Wickham Lighthouse, 19th century lighthouse at Cape Wickham, King Island, Australia

Cape Wickham Lighthouse is a 48-metre stone tower at Cape Wickham on King Island, Tasmania, and is Australia's tallest lighthouse. It was built from locally quarried stone and is listed on the Commonwealth Heritage Register. Inside, eleven timber flights of twenty steps each lead to the top. Around the tower are the remains of associated buildings, including a small church, and several gravestones.

The lighthouse was built in 1861 following the wreck of the Cataraqui in 1845, a disaster that claimed over 400 lives in the waters near King Island. Its construction was a direct response to make these treacherous Bass Strait waters safer for ships passing through.

The graves around the lighthouse belong mostly to people shipwrecked after 1861, when the light began operating. One keeper was dismissed for storing goods his brother had looted from a wreck. The superintendent's residence and other buildings were demolished in the 1920s, but a small church and gravestones remain.

Reaching the top means climbing eleven timber flights of twenty steps each. Only one supply ship called at the station each year, so bring everything you need. The lighthouse stands at Cape Wickham on King Island's north coast, and the surrounding grounds hold gravestones and building remains to walk among.

During preparations for the lighthouse's 150th anniversary, it emerged that the tower had never been officially opened. Governor-General Quentin Bryce corrected this on 5 November 2011, when she formally opened the lighthouse in a ceremony at Cape Wickham.