The Sweet (sometimes known as Sweet) are a British glam rock band who rose to prominence in the 1970s. Their best-known line-up consisted of lead vocalist Brian Connolly, bassist Steve Priest, guitarist Andy Scott and drummer Mick Tucker.

The band formed in London in 1968, originally under the name The Sweetshop, and achieved their first hit, "Funny, Funny", in 1971, after teaming up with songwriters Nicky Chinn and Mike Chapman and record producer Phil Wainman. During 1971 and 1972, their musical style showed a marked progression, from the Archies-like bubblegum style of "Funny, Funny" to a Who-influenced hard rock style, supplemented by a use of high-pitched backing vocals.

The band first achieved success in the UK charts during the 1970s, having thirteen top 20 hits, with "Block Buster!" (1973) topping the chart, followed by three consecutive number-two hits: "Hell Raiser" (1973), "The Ballroom Blitz" (1973) and "Teenage Rampage" (1974). The band turned to a more hard rock style with their mid-career singles, such as 1974's "Turn It Down". "Fox on the Run" (1975) also reached number two on the UK chart. The band were popular in West Germany and other countries on the European mainland. The group achieved success in the US with the top ten hits "Little Willy", "The Ballroom Blitz", "Fox on the Run", and "Love Is Like Oxygen".

Sweet had their last international success in 1978 with "Love Is Like Oxygen". Connolly left the group in 1979 to start a solo career, and the remaining members continued as a trio until they disbanded in 1981. From the mid-1980s, Scott, Connolly and Priest each played with their own versions of Sweet at different times. Connolly died in 1997, Tucker in 2002 and Priest in 2020. Andy Scott is still active with his version of the band. Sweet have sold over 35 million albums worldwide.

The Sweet's origins can be traced back to British soul band Wainwright's Gentlemen. Mark Lay's history of that band states they formed around 1962 and were initially known as Unit 4. Founding members included Chris Wright (vocals), Jan Frewer (bass), and Jim Searle and Alfred Fripp on guitars. Phil Kenton joined on drums as the band changed its name to Wainwright's Gentlemen (due to there being another band known as Unit 4). Managed by Frewer's father, the band performed in the Hayes, Harrow and Wembley area. By 1964 the group was also playing in London, including at the Saint Germain Club on Poland Street.

In January 1964 the band came fifth in a national beat group contest, with finals held at the Lyceum Strand on 4 May 1964. Highlights of the show were presented on BBC1 by Alan Freeman. Chris Wright left the line-up in late 1964 and was replaced by Ian Gillan. Ann Cully also joined the band as a vocalist. Mick Tucker, from Kingsbury, joined on drums replacing Phil Kenton. The band recorded a number of tracks including a cover of the Coasters-Hollies hit "Ain't That Just Like Me", which was probably recorded at Jackson Sound Studios in Rickmansworth. The track includes Gillan on vocals, Tucker on drums and, according to band bassist Jan Frewer, is thought to have been recorded in 1965. Gillan quit in May 1965 to join Episode Six, and later, Deep Purple. Cully remained as vocalist before departing some time later. Gillan's and Cully's eventual replacement, in late 1966, was Scots-born vocalist Brian Connolly, who hailed more recently from Harefield. Tony Hall had joined on saxophone and vocals and when Fripp left he was replaced by Gordon Fairminer. Fairminer's position was eventually assumed by Frank Torpey (born Frank Edward Torpey, 30 April 1945, Kilburn, North West London) – a schoolfriend of Tucker's who had just left West London group The Tribe (aka The Dream). Torpey only lasted a few months, and in late 1967 Robin Box (born 19 June 1944) took his place. Searle disappeared from the scene. Tucker and Connolly remained with Wainwright's Gentlemen until January 1968, when Tucker was dismissed. Tucker was replaced by Roger Hills. When the Gentlemen eventually broke up, Hills and Box joined White Plains who eventually scored a hit with "My Baby Loves Lovin'".

In January 1968, Connolly and Tucker formed a new band, calling themselves The Sweetshop. They recruited bass guitarist and vocalist Steve Priest from a local band called The Army. Priest had previously played with mid-'60s band the Countdowns who had been produced and recorded by Joe Meek. Frank Torpey was again recruited to play guitar. The quartet made its public debut at the Pavilion in Hemel Hempstead on 9 March 1968 and they gradually developed a following. They were managed by Paul Nicholas, who later went on to star in Hair. Nicholas worked with record producer Phil Wainman at Mellin Music Publishing who was sufficiently impressed to record them. This led to a contract with Fontana Records. Just weeks before their debut release an unrelated artist released a single under the name Sweetshop, so the band abbreviated their moniker to The Sweet. "Slow Motion" (July 1968), produced by Wainman, failed to chart. The Sweet were released from the recording contract and Frank Torpey left after a further year of fruitless toil. In his autobiography Are You Ready Steve, Priest says Gordon Fairminer was approached to play for them when Torpey decided to leave The Sweet after a gig at Playhouse Theatre, Walton-on-Thames, on 5 July 1969 but turned the job down as he wanted to concentrate on other interests.

Guitarist Mick Stewart joined in 1969. Stewart had some rock pedigree, having previously worked with The (Ealing) Redcaps and Simon Scott & The All-Nite Workers in the mid-1960s. In late 1965, that band became The Phil Wainman Set when the future Sweet producer joined on drums and the group cut some singles with Errol Dixon. In early 1966, Stewart left and later worked with Johnny Kidd & The Pirates.