Kaci Deanne Brown (born July 7, 1988) is an American pop and R&B singer. Born in Sulphur Springs, Texas, she moved with her family to Nashville, Tennessee at age 12 in 2001, where she signed a music publishing deal as a staff songwriter with Still Working Music, initially with the intention of developing a career in country music. Instead, she chose a pop career and toured with the Backstreet Boys. At age 17, she released her debut album Instigator via Interscope Records in 2005. She co-wrote all but one of the album's songs with producer Toby Gad.

She has charted two singles on the U.S. Dance/Club Play Songs chart. Unbelievable and Instigator. She also released a music video for both singles.