Twenty 4 Seven is a Dutch Eurodance act, created by record producer Ruud van Rijen in 1989. Active sporadically ever since, the act has featured nine different vocalists, has performed across Europe and Africa, and as of 2010 is fronted by Li Ann and Stacey "Stay-C" Seedorf.

One of the earliest popular Eurodance projects, the project originated as a hip hop group, and transitioned to the mainstream Eurodance sound in the early 90s with "Slave to the Music", the band's most successful single to date. The group originally featured rapper Tony Dawson-Harrison, who created the Captain Hollywood Project in 1992.