Marcos Orellana may refer to:
- Marcos Antonio Orellana (1731–1813), Spanish erudite, jurist and writer.
- Marcos A. Orellana (b. 1971), Chilean/U.S. expert in international environmental law.
- Marcos Orellana (parathlete), Guatemalan table-tennis player.
This disambiguation page lists articles about people with the same name.
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