Evolution is the sixth studio album by the English rock and pop band the Hollies, released on 1 June 1967.

Like its predecessor, For Certain Because, this album comprises only songs written by group members Allan Clarke, Graham Nash, and Tony Hicks.

Drummer Bobby Elliott only played on three songs on the album due to appendicitis and, as a result, he was substituted for by Dougie Wright, Clem Cattini and Mitch Mitchell of the Jimi Hendrix Experience.

Two songs sung in Italian, "Non Prego Per Me" and "Devi Avere Fiducia in Me" (the former composed by Lucio Battisti and Mogol), were also recorded on that day specifically for release as a single in Italy.

The next session on 22 February was dedicated to two more songs meant specifically for release in Italy, "We're Alive" and "Kill Me Quick".

The final songs recorded before the album's release in June were "Carrie Anne" on 1 May and its B-side, "Signs That Will Never Change", on the following day.

Over this I superimposed a shot of William Morris Art Nouveau wallpaper with an illustration and 'Love' lettering drawn by my girl friend Anke.