Alan Lancaster (born Alan Charles Lancaster, 7 February 1949 in Peckham, London, England) is a bassist and a founding ex-member of the English rock band, Status Quo. As well as contributing to songwriting, he was also one of the lead vocalists on albums and live concerts taking the lead on tracks such as "Backwater", "Bye Bye Johnny", "High Flyer" and "Roadhouse Blues", etc.
Alan Lancaster formed the group in 1962 with his then schoolmate Francis Rossi. His final performance as a full time member of Status Quo was at Wembley Stadium on 13 July 1985 for the opening of Live Aid. In March 2013 he collaborated with his old bandmates for a series of "Frantic Four" concerts in the UK, which all sold out.
Following "Live Aid", Lancaster's relationship with Francis Rossi became increasingly strained, when Francis Rossi and Rick Parfitt covertly began recording a new album under the name of "Status Quo". Unbeknown to Lancaster - by now living in Australia - and the group's then recording company, Rossi had utilised the assistance of the group's then manager, to drawdown on the group's contracted recording advances, provided by Phonogram Limited. Lancaster was substituted with session musician John 'Rhino' Edwards, who had been recording on a solo project of Rick's - "Recorded Delivery" - which was eventually scrapped. Edwards remains Quo's bassist to this day.