"Aquarela do Brasil" (Brazilian Portuguese: [akwaˈɾɛlɐ du bɾaˈziw]; 'Watercolor of Brazil'), commonly known in the English-speaking world simply as "Brazil", is a samba song written by Ary Barroso in 1939. The patriotic lyrics and celebration of the country of Brazil in the song helped create the genre of samba-exaltação. Recordings of the song were massively popular abroad and were featured in movies such as Saludos Amigos and the titular Brazil.

Ary Barroso wrote "Aquarela do Brasil" in early 1939, when he was prevented from leaving his home one rainy night due to a heavy storm. Its title, a reference to watercolor painting, is a clear reference to the rain. He also wrote "Três lágrimas" (Three Teardrops) on that same night, before the rain ended.

Describing the song in an interview to Marisa Lira, of the newspaper Diário de Notícias, Barroso said that he wanted to "free the samba away from the tragedies of life, of the sensual scenario already so explored". According to the composer, he "felt all the greatness, the value and the wealth of our land", reliving "the tradition of the national panels".

Initially, he wrote the first chords, which he defined as "vibrant", and a "plangent of emotions". The original beat "sang on [his] imagination, highlighting the sound of the rain, on syncope beats of fantastic tambourins". According to him, "the rest came naturally, music and lyrics at once". He declared to have felt like another person after writing the song.

Before being recorded, "Aquarela do Brasil", initially named "Aquarela brasileira", was performed by the baritone Cândido Botelho [pt] on Joujoux e Balangandans, a benefit concert sponsored by Darci Vargas, then the First Lady of Brazil. It was then recorded by Francisco de Morais Alves, arranged by Radamés Gnattali and his orchestra, and released by Odeon Records in August 1939. It was also recorded by Araci Cortes, but despite the singer's huge popularity at the time, the song was not a success.

"Aquarela do Brasil" took a while to succeed. In 1940, it was not among the top three songs of that year's Carnival in Rio. The president of the jury was Heitor Villa-Lobos, and Barroso, offended that his masterpiece was not on the list, ended his relationship with him. The two men would only speak to each other again fifteen years later, when both received the National Order of Merit.

The song only became famous after it was included in Walt Disney's 1942 animated film Saludos Amigos, sung by Aloísio de Oliveira. After that, the song became known not only in Brazil, but worldwide, becoming the first Brazilian song to be played over a million times on American radio. Due to the huge popularity achieved in the United States, it received an English version by songwriter Bob Russell.

It was voted by the Brazilian edition of Rolling Stone as the 12th greatest Brazilian song.