"I Saw Mommy Kissing Santa Claus" is a Christmas song with music and lyrics by British songwriter Tommie Connor and first recorded by American singer Jimmy Boyd in 1952.

The song was commissioned by Saks Fifth Avenue to promote the store's Christmas card for the year, which featured an original sketch by artist Perry Barlow, who drew for The New Yorker for many decades.

The song describes a scene where a child walks downstairs from his bedroom on Christmas Eve to see his mother kissing Santa Claus under the mistletoe.

It was reported that Boyd's record was condemned by the Roman Catholic Church and banned in Boston when it was released, believing that it described an adulterous encounter.

[2] The story goes that Boyd was then photographed meeting with the Archdiocese of Boston to explain the joke behind the song, after which the ban was lifted.

Jones also recorded a parody for his personal pleasure titled "I Saw Mommy Screwing Santa Claus.