Alan Block, also known as Alan W. Block, was an American songwriter renowned for co-writing the song "Walkin' After Midnight" alongside Don Hecht. This song became a significant hit for country music artist Patsy Cline, reaching number two on the Billboard country music chart and number 12 on the pop chart in 1957. "Walkin' After Midnight" was originally intended for pop singer Kay Starr, but it was ultimately recorded by Cline after a compromise with her label. The song's success marked Cline's first major hit and sold over one million copies, later earning a place in the Grammy Hall of Fame in 2020. Alan Block's contribution to this iconic song has cemented his legacy in the country music genre.