Sir Army Suit is the third album recorded by the Canadian rock band Klaatu. It was different from their two previous albums, 3:47 EST and Hope, adopting more of a pop feel. Many of these songs were hold-overs from early demos the band made pre-fame and were revived because band member John Woloschuk had spent a year writing and arranging the Hope album leaving him artistically drained. The band's other main songwriter, Dee Long, picked up the ball with many new compositions and ultimately co-produced and engineered the record while the band's regular producer, Terry Brown, was busy working with Rush and Max Webster.