Legacy

On December 31, 1999, US President Bill Clinton announced that Armstrong's trumpet was among several items of national memorabilia that were to be interred in a Millennial time capsule to be opened 100 years later.

Today, the house where Louis Armstrong lived at the time of his death (and which was declared a National Historic Landmark in 1977) is a museum. The Louis Armstrong House & Archives, at 34-56 107th Street (between 34th and 35th Avenues) in Corona, Queens, presents concerts and educational programs, operates as a historic house museum and makes materials in its archives of writings, books, recordings and memorabilia available to the public for research. The museum is operated by the City University of New York's Queens College, following the dictates of Armstrong’s will. The museum was opened to the public on October 15, 2003. In 2005, it was among 406 New York City arts and social service institutions to receive part of a $20 million grant from the Carnegie Corporation, which was made possible through a donation by New York City mayor Michael Bloomberg.

The influence of Armstrong on the development of jazz is virtually immeasurable. Yet, his irrepressible personality both as a performer, and as a public figure later in his career, was so strong that to some it sometimes overshadowed his contributions as a musician and singer.

As a virtuoso trumpet player, Armstrong had a unique tone and an extraordinary talent for melodic improvisation. Through his playing, the trumpet emerged as a solo instrument in jazz and is used widely today. He was a masterful accompanist and ensemble player in addition to his extraordinary skills as a soloist. With his innovations, he raised the bar musically for all who came after him.

Some critics contend that Armstrong essentially invented jazz singing. Though widely recognized as a pioneer of scat singing, Ethel Waters precedes his scatting on record in the 1930s according to Gary Giddens and others. Billie Holiday and Frank Sinatra are just two singers who were greatly indebted to him. Holiday said that she always wanted Bessie Smith's 'big' sound and Armstrong's feeling in her singing.

On August 4, 2001, the centennial of Armstrong's birth, New Orleans' airport was renamed Louis Armstrong International Airport in his honor.

In 2002, the Louis Armstrong's Hot Five and Hot Seven recordings (1925-1928) are preserved in the United States National Recording Registry, a registry of recordings selected yearly by the National Recording Preservation Board for preservation in the National Recording Registry of the Library of Congress.

The US Open tennis tournament's former main stadium was named Louis Armstrong Stadium in honor of Armstrong who had lived a few blocks from the site.

Literature, Radio, films and TV

Armstrong appeared in more than a dozen Hollywood films, usually playing a band leader or musician. His most familiar role was as the bandleader cum narrator in the 1956 musical, High Society, in which he sang the title song and performed a duet with Bing Crosby on " Now You Has Jazz". In 1947, he played himself in the movie New Orleans opposite Billie Holiday, which chronicled the demise of the Storyville district and the ensuing exodus of musicians from New Orleans to Chicago  He was the first African American to host a nationally broadcast radio show in the 1930s. In 1969, Armstrong had a cameo role in the film version of Hello, Dolly! as the bandleader, Louis, to which he sang the title song with actress Barbra Streisand. His solo recording of Hello, Dolly! is one of his most recognizable performances.

He was heard on such radio programs as The Story of Swing (1937) and This Is Jazz (1947), and he also made countless television appearances, especially in the 1950s and 1960s, including appearances on The Tonight Show Starring Johnny Carson.

Louis Armstrong has a record star on the Hollywood Walk of Fame on 7601 Hollywood Boulevard.

Many of Armstrong's recordings remain popular. Almost four decades since his passing, a larger number of his recordings from all periods of his career are more widely available than at any time during his lifetime. His songs are broadcast and listened to every day throughout the world, and are honored in various movies, TV series, commercials, and even anime and computer games. "A Kiss to Build a Dream On" was included in the computer game Fallout 2, accompanying the intro cinematic. It was also used in the 1993 film Sleepless in Seattle. His 1923 recordings, with Joe Oliver and his Creole Jazz Band, continue to be listened to as documents of ensemble style New Orleans jazz, but more particularly as ripper jazz records in their own right. All too often, however, Armstrong recorded with stiff, standard orchestras leaving only his sublime trumpet playing as of interest. "Melancholy Blues," performed by Armstrong and his Hot Seven was included on the Voyager Golden Record sent into outer space to represent one of the greatest achievements of humanity. Most familiar to modern listeners is his ubiquitous rendition of " What a Wonderful World." In 2008, Armstrong's recording of Edith Piaf's famous " La Vie En Rose" was used in a scene of the popular Disney/Pixar film WALL-E.

Argentine writer Julio Cortázar, a self-described Armstrong admirer, asserted that a 1952 Louis Armstrong concert at the Théâtre des Champs-Élysées in Paris played a significant role in inspiring him to create the fictional creatures called Cronopios that are the subject of a number of Cortázar's short stories. Cortázar once called Louis Armstrong himself "Grandísimo Cronopio" (Most Enormous Cronopio).

Armstrong also appears as a minor character in Harry Turtledove's Timeline-191 series. When he and his band escape from a Nazi-like Confederacy, they enhance the insipid mainstream music of the North.

There is a pivotal scene in 1980's Stardust Memories in which Woody Allen is overwhelmed by a recording of Armstrong's Stardust and experiences a nostalgic epiphany  The combination of the music and the perfect moment is the catalyst for much of the film's action, prompting the protagonist to fall in love with an ill-advised woman

Louis Armstrong is also referred to in The Trumpet of the Swan along with Ella Fitzgerald and Billie Holiday. Three siblings in the film are named Louis, Billie, and Ella. The main character, Louis, plays a trumpet, an obvious nod to Armstrong.

In the original EB White book, he is referred to by name by a child who hears Louis playing and comments "He sounds just like Louis Armstrong, the famous trumpet player".