"Un buco nella sabbia" () is a song by Italian singer Mina, written by Piero Soffici and Alberto Testa. The song was released as a single, reaching number 7 on the Italian chart, and was later included in the album Studio Uno (1965).
There is also a Spanish-language version titled "Un Hoyo en la Arena", released in Spain in 1964 on the EP Mina Canta en Español.
In 1965, a Japanese version of the song with lyrics by Kenji Sazanami was released in Japan. The song achieved extraordinary success, taking the second position on the chart, and sales exceeded 400,000 copies; at the end of the year, Mina was also recognized as the best international artist.