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Memorialized

Numerous memorials have been dedicated to Duke Ellington in cities from New York and Washington, D.C. to Los Angeles.

In Ellington's birthplace, Washington, D.C., the Duke Ellington School of the Arts educates talented students who are considering careers in the arts by providing art instruction and academic programs to prepare students for post-secondary education and professional careers. In 1974, the District renamed the Calvert Street Bridge, originally built in 1935, as the Duke Ellington Bridge. Another school is P.S. 004 Duke Ellington in New York.

In 1989, a bronze plaque was attached to the newly named Duke Ellington Building at 2121 Ward Place NW. In 2012, the new owner of the building commissioned a mural by Aniekan Udofia that appears above the lettering "Duke Ellington". In 2010 the triangular park, across the street from Duke Ellington's birth site, at the intersection of New Hampshire and M Streets NW, was named the Duke Ellington Park.

Ellington's residence at 2728 Sherman Avenue NW, during the years 1919–1922, is marked by a bronze plaque.

On February 24, 2009, the United States Mint issued a coin with Duke Ellington on it, making him the first African American to appear by himself on a circulating U.S. coin. Ellington appears on the reverse (tails) side of the District of Columbia quarter. The coin is part of the U.S. Mint's program honoring the District and the U.S. territories and celebrates Ellington's birthplace in the District of Columbia. Ellington is depicted on the quarter seated at a piano, sheet music in hand, along with the inscription "Justice for All", which is the District's motto.

In 1986, a United States commemorative stamp was issued featuring Ellington's likeness.

Ellington lived out his final years in Manhattan, in a townhouse at 333 Riverside Drive near West 106th Street. His sister Ruth, who managed his publishing company, also lived there, and his son Mercer lived next door. After his death, West 106th Street was officially renamed Duke Ellington Boulevard.

A large memorial to Ellington, created by sculptor Robert Graham, was dedicated in 1997 in New York's Central Park, near Fifth Avenue and 110th Street, an intersection named Duke Ellington Circle.

A statue of Ellington at a piano is featured at the entrance to UCLA 's Schoenberg Hall. According to UCLA magazine:

When UCLA students were entranced by Duke Ellington's provocative tunes at a Culver City club in 1937, they asked the budding musical great to play a free concert in Royce Hall. 'I've been waiting for someone to ask us!' Ellington exclaimed.On the day of the concert, Ellington accidentally mixed up the venues and drove to USC instead. He eventually arrived at the UCLA campus and, to apologize for his tardiness, played to the packed crowd for more than four hours. And so, "Sir Duke" and his group played the first-ever jazz performance in a concert venue.

The Essentially Ellington High School Jazz Band Competition and Festival is a nationally renowned annual competition for prestigious high school bands. Started in 1996 at Jazz at Lincoln Center, the festival is named after Ellington because of the significant focus that the festival places on his works.