Led Zeppelin II is the second studio album by the English rock band Led Zeppelin, released in October 1969 on Atlantic Records. Recording sessions for the album took place at several locations in the United Kingdom and North America from January to August 1969. Production was credited to lead guitarist and songwriter Jimmy Page, while it also served as Led Zeppelin's first album to utilise the recording techniques of engineer Eddie Kramer. With elements of blues and folk music, Led Zeppelin II also exhibits the band's evolving musical style of blues-derived material and their guitar and riff-based sound. It has been described as the band's heaviest album.
Upon release, Led Zeppelin II sold well and was the band's first album to reach number one in the UK and the US. In 1970, art director David Juniper was nominated for a Grammy Award for Best Recording Package for the album. On 15 November 1999, it was certified 12× Platinum by the RIAA for sales in excess of 12 million copies. Since its release, writers and music critics have regularly cited it in polls of the greatest and most influential rock albums.