How many commercial singles promoted Metallica's 1991 self-titled album?

Five commercial singles promoted Metallica's 1991 self-titled album.

The singles were "Enter Sandman," "The Unforgiven," "Nothing Else Matters," "Wherever I May Roam," and "Sad but True." They were released across 1991 and 1992, extending the album's campaign well beyond its initial August 1991 arrival.

The album also received promotional rock-radio support for "Don't Tread on Me," but that track did not receive a commercial single release. This is the main reason some lists appear to count six songs associated with the album's radio promotion while the official commercial-single total remains five.

The five singles covered several sides of Metallica's new approach: a dark arena-rock anthem, a dramatic ballad, a reflective power ballad, a roaming heavy-metal track, and a slower riff-driven song. Their combined reach helped the album cross from the metal market into mainstream radio and international charts.