The renowned artist known for their abstract sculptures in the 20th century is Henry Moore. Moore's work is characterized by organic forms and the integration of positive and negative space, often reflecting themes of humanity and nature. His iconic pieces, crafted from materials like stone and bronze, have been displayed in public spaces and galleries worldwide, making substantial contributions to modern sculpture. Moore's ability to evoke emotion through form has left a lasting impact on the art world, earning him widespread acclaim and admiration.