Pet Shop Boys are an English synth-pop duo formed in London in 1981. Consisting of keyboardist Chris Lowe and vocalist Neil Tennant, they have sold more than 100 million records worldwide and were listed as the most successful duo in UK music history in the 1999 edition of The Guinness Book of Records.

Pet Shop Boys have achieved 42 top 30 singles, including 22 top-10 hits on the UK singles chart, including four UK number-ones: "West End Girls" (also number one on the US Billboard Hot 100), "It's a Sin", a synth-pop version of "Always on My Mind", and "Heart". Other hit songs include a cover of "Go West", and their own "Opportunities (Let's Make Lots of Money)", and "What Have I Done to Deserve This?" in a duet with Dusty Springfield. With five US top 10 singles in the 1980s, they are associated with the Second British Invasion.

Pet Shop Boys have won three Brit Awards and have been nominated for Grammy Awards. At the 2009 Brit Awards in London, they received an award for Outstanding Contribution to Music. In 2016, Billboard named Pet Shop Boys the number one dance duo or group since the chart's inception in 1976. In 2017, the duo received NME's Godlike Genius Award, and in 2024, they were awarded the Pop Pioneers award at the MTV Europe Music Awards.