"Infinity" is a song by American singer-songwriter and record producer Mariah Carey from her sixth compilation album, #1 to Infinity (2015). It was released by Epic Records on April 27, 2015, as the only single from the album. Carey wrote the song in collaboration with Eric Hudson, Priscilla Renea, Taylor Parks and Ilsey Juber. Carey and Hudson also produced the track. It is an R&B song; the lyrics are about Carey putting herself first and emancipation. However, many critics likened the content to the singer's separation from her then-husband, entertainer Nick Cannon.

Priscilla Renea Hamilton, known professionally as Muni Long, is an American singer and songwriter from Gifford, Florida. Under her birth name, she signed with Capitol Records to release her debut studio album Jukebox (2009), which was met with positive critical reception despite failing to chart. She then spent the following decade co-writing songs for other artists, including the hit singles "Promise This" for Cheryl, "California King Bed" for Rihanna, "Worth It" for Fifth Harmony, "Love So Soft" for Kelly Clarkson, "Imagine" for Ariana Grande, "Who Says" for Selena Gomez & the Scene, and the global hit "Timber" for Pitbull.