"Fool #1" is a song written by Kathryn R. Fulton and performed by Brenda Lee. The song was featured on Lee's 1962 album, Brenda, That's All.

Chart performance The song reached No. 3 on the Billboard Hot 100 and No.38 in the UK (where it was entitled "Fool No.1", because the # symbol was not synonymous with the word 'number' for British audiences) in 1961. The song also reached No. 1 in New Zealand and No. 23 in Australia.

The single's B-Side, "Anybody But Me", reached No. 31 on the Billboard Hot 100.

Other versions Johnny Tillotson released a version on his 1962 album, It Keeps Right On a-Hurtin'. Loretta Lynn released a version on her 1964 album, Before I'm Over You. Connie Smith released a version on her 1969 album, Back in Baby's Arms. Marie Osmond released a version on her 1973 album, Paper Roses.

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