No shortage of competition but undoubtedly Dylan's Highway 61 Revisited.
The Beatles of course had a banner year with Help and Rubber Soul, Dylan had another classic with Bringing It All Back Home and the Stones with Out Of Our Heads.
Otis Redding's Otis Blue is awesome.
Also, gotta mention the Sonics crazed debut album, Here Are The Sonics.
Outside rock and into jazz, John Coltrane released A Love Supreme and Miles Davis released E.S.P. Not too shabby!