"I Don't Know a Thing About Love (The Moon Song)" is a song written by Harlan Howard, and recorded by American country music artist Conway Twitty. It was released in July 1984, as the second single from the album By Heart. The song was Twitty's 48th number one overall country hit. The single with backing vocals by Twitty's daughter Joni Lee went to number one for one week and spent a total of 14 weeks on the country chart.