Ramón Avanceña y Quiosay (April 13, 1872 – June 12, 1957) was a Chief Justice of the Supreme Court of the Philippines.
He served from 1925 to 1941, when he resigned at the beginning of the Japanese occupation of the Philippines during World War II.
Ramón Avanceña served as a legal adviser to the Federal State of the Visayas, the revolutionary government of provinces of Iloilo, Capiz and Antique, and was chosen to negotiate with the American forces on Panay during the Philippine–American War.
Upon the death of Manuel Araullo in 1924, he succeeded as Chief Justice, but he had to wait until 1925 to be formally appointed.
He was supposed to join Philippine Commonwealth President Manuel L. Quezon in exile during the onset of the Japanese Occupation, but worried that he would not be together with his family, so he decided to stay put.