Sir Dunstan Gerbert Raphael St. Omer KCMG MBE (24 October 1927 – 5 May 2015) was a Saint Lucian painter, muralist and educator.

[2] St. Omer left Saint Lucia for Curaçao where he was influenced by the Greek artist Pandelis.

[3] St. Omer painted several murals in churches around Saint Lucia including the Cathedral Basilica of the Immaculate Conception.

[3][4] In 1967, St. Omer designed the flag of Saint Lucia, winning a national contest for the best flag design marking Saint Lucia's statehood.

[1][5] In 2004, St. Omer received the Papal Medal from the Catholic Church and the Saint Lucia Cross from the government of Saint Lucia for his church murals.