The Petronas Twin Towers (also known as the Petronas Towers), in Kuala Lumpur, Malaysia, were once the world's tallest buildings when measured from the level of the main entrance to the structural or architectural top.

They have since been unseated by the Taipei 101 on October 17, 2003. The Petronas Twin Towers are currently the tallest twin towers in the world, and they lay claim to being the world's tallest high rise of the 20th century.