"I Wanna Know" is a song by American R&B singer Joe. It was written by Joe, Joylon Skinner and Michele Williams for his third studio album My Name Is Joe (2000), while production was helmed by Joe and Tony Nicholas, featuring additional credit from Timmy Allen. It also appeared on the soundtrack to the film The Wood (1999). Released as a single, it reached number four on the US Billboard Hot 100 and number two on the Hot R&B/Hip-Hop Songs chart. The song was ranked fourth on the Billboard Hot 100's 2000 year-end chart.

Joseph Lewis Thomas, known mononymously as Joe, is an American R&B singer. He signed to Polygram Records in 1992, and rose to prominence after releasing his debut album Everything the following year. He followed it with a series of successful albums under Jive Records, including All That I Am (1997), the international bestseller My Name Is Joe (2000) as well as the multi-certified albums Better Days (2001) and And Then... (2003). Several songs from these albums became hit singles on the pop and R&B record charts, including the number-one hit "Stutter", the top ten entries "All the Things ", "Don't Wanna Be a Player", and "I Wanna Know" as well as his collaborations "Faded Pictures", "Thank God I Found You" and "Still Not a Player".