"Lady Willpower" is a song written by Jerry Fuller and recorded by Gary Puckett & The Union Gap for their 1968 album Incredible.

[2] In the U.S., the song ranked among Cashbox's Top 100 singles of 1968, where it hit the No.

2 on the Billboard Hot 100 in 1968 (behind "Grazing in the Grass" by Hugh Masekela).

[7] "Lady Willpower" also peaked at #4 on the Kent Music Report (KMR)[8] Chart in Australia, spending 16 weeks on the KMR Top-100 after entering the chart on the 22nd June 1968.

Morrissey recorded his version of the song and included it on his 2019 album, California Son.