R2K: The Concert was the first arena concert by Filipina entertainer Regine Velasquez, held on April 7 and 8, 2000, at the Araneta Coliseum in Quezon City. It was a part of Velasquez's promotion of her tenth studio album, R2K (1999). It was exclusively promoted by Viva Concerts, with beauty brands Pond's and Sunsilk as sponsors. Velasquez served as the stage and creative director for the show, which featured Ogie Alcasid, Gabby Eigenmann, Janno Gibbs, Jaya, and KC Montero as guest acts.