"Do You Know? " is a song by Spanish singer Enrique Iglesias. It was released in 2007 as the first single from his eighth studio album, Insomniac and takes the latter part of its English name from the sound of a ping pong ball bouncing that is employed as a percussion track throughout the song. The song's Spanish version is entitled "Dímelo" and was released to Latin radio, becoming Iglesias' 17th number one song on the US Billboard Hot Latin Songs.

Enrique Miguel Iglesias Preysler is a Spanish singer and songwriter. He started his recording career in the mid-1990s on the Mexican label Fonovisa and became the bestselling Spanish-language act of the decade. By the turn of the millennium, he made a successful crossover into the mainstream English-language market. He signed a multi-album deal with Universal Music Group for US$68 million with Universal Music Latino to release his Spanish albums and Interscope Records to release English albums. Enrique is the third and youngest child of Spanish singer-songwriter Julio Iglesias.