Orlando Cornejo Bustamante (26 October 1929 – 20 April 2015) was the 37th Mayor of the commune of Pichilemu, office which he held between September 1992 and December 1996, representing the Union of the Centrist Center (UCC).

Cornejo Bustamante was born on 26 October 1929 in the village of Cáhuil, Pichilemu, in current Cardenal Caro Province, Region of O'Higgins, Chile.

"[4] Orlando Cornejo Bustamante ran as a candidate in the 1992 municipal election, held in June of that year, representing the Union of the Centrist Center (UCC).

[12] Orlando Cornejo's mayorship has been qualified as "one of the best administrations of Pichilemu in democracy" by conservative National Renewal (RN) politician Aldo Polanco Contreras, who went on to say in an October 2008 interview with El Expreso de la Costa that "he [Cornejo] would not do anything if it was wrong, because he asked people who are knowledgeable in administrative matters in the municipality and so he had never any trouble.

[14] He unsuccessfully ran again as a candidate in the 2000 election, as an independent supported by the List D, of his former Progressive Union of the Centrist Center party.