The Orchestra of the Americas (OA) is a symphony orchestra of ages 18 to 30, representing more than 25 countries of the Western Hemisphere.

The orchestra is guided by Artistic Advisor Plácido Domingo and Music Director Carlos Miguel Prieto.

The orchestra was founded in 2002 by VISIÓN Inc in partnership with the New England Conservatory. The Orchestra's creation was inspired by pioneering work of figures including Jorge Peña Hen (Chile), Ana Milena Muñoz Gómez (Colombia), Oscar Arias (Costa Rica), José Antonio Abreu (Venezuela), and others throughout the Americas, to give the platform of the symphony orchestra renewed purpose at the epicenter of social transformations in diverse, underprivileged communities.^[1] The organization was established by founding chairman Hilda Ochoa-Brillembourg, vice-chairman Mark Churchill, vice-chairman José Antonio Abreu, and managing director Debra McKeon, in partnership with The David Rockefeller Center for Latin American Studies at Harvard University, the Organization of American States, and the Inter-American Development Bank. Early musical supporters include Yo-Yo Ma, Carlos Miguel Prieto, Plácido Domingo, Gustavo Dudamel, and Benjamin Zander, among others. Since its inaugural tour, The Orchestra of the Americas has performed over 400 concerts for audiences in 35+ countries throughout the Americas, Europe, and Asia. The Orchestra has reached over 15 million people through television & radio broadcasts, recordings, print, and television - including three feature-length documentary films dedicated to the Orchestra. The Orchestra has released commercial recordings with Plácido Domingo, Gabriela Montero, Philip Glass, and others.^{[citation needed]}

Carlos Miguel Prieto is music director and Plácido Domingo is Founding Artistic Advisor of The Orchestra of the Americas. Gustavo Dudamel was the Orchestra' Co-Principal Conductor from 2003 to 2010. Guest conductors have included Lorin Maazel, Valery Gergiev, Kent Nagano, Leonard Slatkin, Rafael Payare, Helmuth Rilling, Isaac Karabtchevsky, and José Serebrier, among others. Soloists include Yo-Yo Ma, Joshua Bell, Sarah Chang, Vadim Repin, Julian Rachlin, Nelson Freire, Alisa Weilerstein, Louis Lortie, Ingrid Fliter, James Ehnes, Gabriela Montero, Paquito d'Rivera, Antonio Meneses, Matt Haimovitz, Ildar Abdrazakov, Mariachi Vargas, Danilo Perez, Horacio Lavandera, Ilya Gringolts, Philippe Quint, Edmundo T. Ramírez, Alex Klein, among others. The Orchestra's instrumental coaching faculty includes members of the world's top orchestras, among them principals of the Metropolitan Opera Orchestra, San Francisco Symphony, Chicago Symphony, New York Philharmonic, Montreal Symphony, Boston Symphony, Rome Opera, Royal Concertgebouw Orchestra, Brussels Philharmonic, Cleveland Orchestra, Philadelphia Orchestra, Toronto Symphony, Royal Philharmonic, London Symphony Orchestra, Royal Stockholm Philharmonic, as well as academic music institutions of high repute including The Juilliard School, The Curtis Institute of Music, The Colburn School, and Shepherd School of Music. Head of Faculty since 2006 has been German violinist Leon Spierer who led the Berlin Philharmonic as Concertmaster from 1963 to 1993 under Herbert von Karajan. Composers-in-Residence to work with the Orchestra include John Estacio (2009), Philip Glass (2010 & 2011), Juan Orrego-Salas (2012), Tan Dun (2013), Arturo Marquez (2014), Nicolas Gilbert (2015), Arvo Pärt (2016), Jüri Reinvere (2016), Gabriela Montero (2017), Juan Jose Chuquisengo (2017), Krzysztof Penderecki (2018), Myroslav Skoryk (2018), and Gabriela Ortiz (2019), among others.^{[citation needed]}

Annually up to 6000 musicians across the Western Hemisphere enter the process of auditioning for one of 80 seats in the Orchestra, ranking it among the most competitive orchestra academies in the world. All accepted participants join the Orchestra for a period of one year on full scholarship, which includes an annual international residency and tour. Alumni occupy posts in major international orchestras including the London Symphony Orchestra, Mariinsky Theatre Orchestra, Cleveland Orchestra, Toronto Symphony, Pacific Symphony, National Symphony Orchestra, Metropolitan Opera Orchestra, Los Angeles Philharmonic, OSESP, Orquesta Sinfonica Nacional de Mexico, Charlotte Symphony, Louisiana Philharmonic, Portland Symphony, Boston Philharmonic, Buenos Aires Philharmonic, Boston Symphony, Detroit Symphony, Sarasota Orchestra, Seattle Symphony, New World Symphony, Los Angeles Philharmonic, Rotterdam Philharmonic, Paris Opera, Seoul Philharmonic, Chicago Civic Orchestra, Orchestra London, National Arts Centre Orchestra, Minnesota Orchestra, and others. Many alumni have also founded musical institutions in their home regions that focus on social transformation and community development.^{[citation needed]}

The Global Leaders Institute was launched in 2013 as an affiliate of The Orchestra of the Americas Group. Curated by nine higher education institutions, including Harvard University, McGill University, New York University, Stanford University, Georgetown University, Bard College, and Duke University, The Global Leaders Institute offers an annual Executive MBA in Arts Innovation.

The Orchestra has helped to launch a range of national music institutions across the Americas, including Mexico's Sinfónica Azteca, Filarmonica Joven de Colombia, the National Youth Orchestra of the Dominican Republic, The National Youth Orchestra of Jamaica, and nationwide orchestral initiatives in Belize, Haiti, and Honduras.

The Orchestra of the Americas is registered as an organization in the United States, Costa Rica, Canada, Brazil, and Venezuela. The head office is a 501(c)(3) located in Washington, DC. The organization's operating budget is $3 million USD.