Three Dog Night (also known as One) is the debut album by American rock band Three Dog Night. The album was originally released by Dunhill Records on October 16, 1968. The album is known for featuring the band's Top 5 hit single, their cover of Harry Nilsson's song "One". The album made the Top 20 on the albums charts in the United States and Canada. It has been reissued multiple times by Dunhill, MCA, and Geffen record labels.