Jerome Alan Yester (born January 9, 1943[1][2]) is an American former folk rock musician, record producer, and arranger.

Yester has been a member of several bands including The New Christy Minstrels, Modern Folk Quartet, The Association, Rosebud and The Lovin' Spoonful.

In 1991 he reunited with Joe Butler and Steve Boone to tour again as the Lovin Spoonful, playing guitar, keyboards and singing.

[7] The MFQ released two albums in the next two years, and Yester also branched out into other recordings, playing piano on the Lovin' Spoonful's "Do You Believe in Magic" in 1965.

[7] Yester continued to work as a producer and/or arranger on albums by the Turtles, Pat Boone, Aztec Two Step, and Tom Waits,[7] and in the 1970s, also performed with the Association and the re-formed Modern Folk Quartet.

[18][19][20] Yester pleaded guilty to eight counts of distributing, possessing or viewing matter depicting sexually explicit conduct involving a child on October 9, 2018.

[21][22] In July 2019, Yester was sentenced to two years in prison after his conviction for child pornography possession, and he was required to register as a sex offender.