A Momentary Lapse of Reason and Another Lapse were two consecutive concert tours by the English rock band Pink Floyd. The A Momentary Lapse of Reason tour ran from September 1987 to August 1988; the Another Lapse tour ran from May–July 1989. Both tours were in support of their album A Momentary Lapse of Reason (1987). The tour was the band's first since The Wall tour in 1981, and also the first without the band's original bassist Roger Waters. The band later reprised the setlist and stage show of this tour for their performance at Knebworth Park in 1990.