Lynn Kellogg was an American actress and singer.

In the original 1968 Broadway production of the counterculture musical Hair, Kellogg played Sheila, who transforms from a debutante into a hippie upon meeting the rest of the group. The role of Sheila was the most substantial female role in the ensemble show.

In addition to stage work, Kellogg made several television appearances, including episodes of The Edge of Night, The Beverly Hillbillies, It Takes a Thief and Mission: Impossible. She also had a supporting role in Elvis Presley's 1969 film, Charro!

A talented singer, Kellogg performed on The Mike Douglas Show and The Johnny Cash Show, among others, and entertained Vietnam War troops.

Later in her career, she created the series Animals, Animals, Animals (hosted by Hal Linden), which won a Daytime Emmy for outstanding children's informational series.

Kellogg died November 12, 2020, in St. Louis, Missouri. She was 77.