C-Note

C-Note may refer to:
 * C-Note (album), an album by the musician Prince
 * C-Note (band), an Orlando boy band
 * C-Note (rapper), an American rapper
 * C-note (bill), slang for the United States one-hundred-dollar bill
 * C (musical note), the first note of the C major scale
 * C-Note (Prison Break), a character in Prison Break
 * cNote (film), an animated short by Christopher Hinton
 * The C Note, an episode of Recess