Strength is the second studio album by the American rock band Enuff Z'nuff, released in 1991.

[5][6] In 2007, lead singer and guitarist of Enuff Z'nuff, Donnie Vie, released the album Extra Strength, an acoustic reworking of the 1991 recording.

The Encyclopedia of Popular Music called the album "an impressive and mature musical offering that combined infectious hooks, abrasive guitar work and a sparkling production to dramatic effect.

"[11] The Washington Post wrote that it "is actually quite likable, with a melodic flair that renders such songs as 'Heaven or Hell' and 'Blue Island' as agreeable as, say, middling Badfinger.

"[15] The Province thought that "as the hair drops and the lip gloss is wiped away, Enuff Z'Nuff slowly is letting its real personality show - a group that really wants to be the hard rock equivalent of The Beatles or, failing that, the glam-rock Cheap Trick or, at least, the bastard children of Slade and The Raspberries.