"Irresistible" is a song by the British singer-songwriter Steve Harley. It was released three times as a single; the first being in 1985 as a non-album single under his band's name Steve Harley & Cockney Rebel. In 1986, the track was remixed and re-issued as a new solo single. Later in 1992, Harley released the 1986 version as a single again, after it appeared on his 1992 solo album Yes You Can. "Irresistible" was written by Harley and produced by English producer Mickie Most.

"Irresistible" was first performed live at Cockney Rebel's December 1984 concert at Camden Palace, London. The concert was recorded for a special TV broadcast (and later released on the VHS Live from London in 1985). This performance of the song used lead guitar as a more dominant instrument and featured a third verse that was never included on any studio versions. The verse linked directly into the fourth and final verse (which would become the third verse itself on the studio recordings):

They're clapping their hands now, the vision has grown dim
They're building a cross now, and giving it to him
I'm every religion, I'm practicing a sin
It's so cold, so cold, so cold and getting colder

After writing it, Harley offered "Irresistible" to Rod Stewart, however Stewart turned it down. He knew how keen Harley was for a hit of his own and so encouraged him to record it in the hope that it would put him back in the charts. During 1984, Harley signed a contract to record five albums for Mickie Most's label RAK. Working with Most at the producer's helm, "Irresistible" was recorded with Harvey Hinsley on guitar, Adrian Lee on keyboards and Mark Brzezicki of Big Country on drums. The song was released in May 1985 as Harley's debut RAK single. It peaked at No. 81 on the UK Singles Chart and stayed in the Top 100 for five weeks. It had debuted on the chart in mid-June 1985 at No. 98.

"Irresistible" was released by RAK Records on 7" and 12" vinyl in the UK, Belgium, Germany and the Netherlands. The B-Side, "Such is Life", was written by Harley and produced by Most. It was exclusive to the single and did not appear on any other release until 1988 when it was included on the Steve Harley & Cockney Rebel compilation The Collection. "Such is Life" was debuted live by the band during their 1980 Christmas tour. Harley also introduced "My Cold Heart", "I Could Be Anyone" and a reggae-version of "Mr. Soft" on the same tour.

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